1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2017-2022 Broadcom. All Rights Reserved. The term * 5 * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. * 6 * Copyright (C) 2004-2016 Emulex. All rights reserved. * 7 * EMULEX and SLI are trademarks of Emulex. * 8 * www.broadcom.com * 9 * Portions Copyright (C) 2004-2005 Christoph Hellwig * 10 * * 11 * This program is free software; you can redistribute it and/or * 12 * modify it under the terms of version 2 of the GNU General * 13 * Public License as published by the Free Software Foundation. * 14 * This program is distributed in the hope that it will be useful. * 15 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * 16 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * 17 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * 18 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * 19 * TO BE LEGALLY INVALID. See the GNU General Public License for * 20 * more details, a copy of which can be found in the file COPYING * 21 * included with this package. * 22 *******************************************************************/ 23 24 #include <linux/blkdev.h> 25 #include <linux/delay.h> 26 #include <linux/slab.h> 27 #include <linux/pci.h> 28 #include <linux/kthread.h> 29 #include <linux/interrupt.h> 30 #include <linux/lockdep.h> 31 #include <linux/utsname.h> 32 33 #include <scsi/scsi.h> 34 #include <scsi/scsi_device.h> 35 #include <scsi/scsi_host.h> 36 #include <scsi/scsi_transport_fc.h> 37 #include <scsi/fc/fc_fs.h> 38 39 #include "lpfc_hw4.h" 40 #include "lpfc_hw.h" 41 #include "lpfc_nl.h" 42 #include "lpfc_disc.h" 43 #include "lpfc_sli.h" 44 #include "lpfc_sli4.h" 45 #include "lpfc.h" 46 #include "lpfc_scsi.h" 47 #include "lpfc_nvme.h" 48 #include "lpfc_logmsg.h" 49 #include "lpfc_crtn.h" 50 #include "lpfc_vport.h" 51 #include "lpfc_debugfs.h" 52 53 /* AlpaArray for assignment of scsid for scan-down and bind_method */ 54 static uint8_t lpfcAlpaArray[] = { 55 0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6, 56 0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA, 57 0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5, 58 0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9, 59 0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97, 60 0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79, 61 0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B, 62 0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56, 63 0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A, 64 0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35, 65 0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29, 66 0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17, 67 0x10, 0x0F, 0x08, 0x04, 0x02, 0x01 68 }; 69 70 static void lpfc_disc_timeout_handler(struct lpfc_vport *); 71 static void lpfc_disc_flush_list(struct lpfc_vport *vport); 72 static void lpfc_unregister_fcfi_cmpl(struct lpfc_hba *, LPFC_MBOXQ_t *); 73 static int lpfc_fcf_inuse(struct lpfc_hba *); 74 static void lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *, LPFC_MBOXQ_t *); 75 static void lpfc_check_inactive_vmid(struct lpfc_hba *phba); 76 static void lpfc_check_vmid_qfpa_issue(struct lpfc_hba *phba); 77 78 static int 79 lpfc_valid_xpt_node(struct lpfc_nodelist *ndlp) 80 { 81 if (ndlp->nlp_fc4_type || 82 ndlp->nlp_type & NLP_FABRIC) 83 return 1; 84 return 0; 85 } 86 /* The source of a terminate rport I/O is either a dev_loss_tmo 87 * event or a call to fc_remove_host. While the rport should be 88 * valid during these downcalls, the transport can call twice 89 * in a single event. This routine provides somoe protection 90 * as the NDLP isn't really free, just released to the pool. 91 */ 92 static int 93 lpfc_rport_invalid(struct fc_rport *rport) 94 { 95 struct lpfc_rport_data *rdata; 96 struct lpfc_nodelist *ndlp; 97 98 if (!rport) { 99 pr_err("**** %s: NULL rport, exit.\n", __func__); 100 return -EINVAL; 101 } 102 103 rdata = rport->dd_data; 104 if (!rdata) { 105 pr_err("**** %s: NULL dd_data on rport x%px SID x%x\n", 106 __func__, rport, rport->scsi_target_id); 107 return -EINVAL; 108 } 109 110 ndlp = rdata->pnode; 111 if (!rdata->pnode) { 112 pr_err("**** %s: NULL ndlp on rport x%px SID x%x\n", 113 __func__, rport, rport->scsi_target_id); 114 return -EINVAL; 115 } 116 117 if (!ndlp->vport) { 118 pr_err("**** %s: Null vport on ndlp x%px, DID x%x rport x%px " 119 "SID x%x\n", __func__, ndlp, ndlp->nlp_DID, rport, 120 rport->scsi_target_id); 121 return -EINVAL; 122 } 123 return 0; 124 } 125 126 void 127 lpfc_terminate_rport_io(struct fc_rport *rport) 128 { 129 struct lpfc_rport_data *rdata; 130 struct lpfc_nodelist *ndlp; 131 struct lpfc_vport *vport; 132 133 if (lpfc_rport_invalid(rport)) 134 return; 135 136 rdata = rport->dd_data; 137 ndlp = rdata->pnode; 138 vport = ndlp->vport; 139 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 140 "rport terminate: sid:x%x did:x%x flg:x%x", 141 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag); 142 143 if (ndlp->nlp_sid != NLP_NO_SID) 144 lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT); 145 } 146 147 /* 148 * This function will be called when dev_loss_tmo fire. 149 */ 150 void 151 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport) 152 { 153 struct lpfc_nodelist *ndlp; 154 struct lpfc_vport *vport; 155 struct lpfc_hba *phba; 156 struct lpfc_work_evt *evtp; 157 unsigned long iflags; 158 159 ndlp = ((struct lpfc_rport_data *)rport->dd_data)->pnode; 160 if (!ndlp) 161 return; 162 163 vport = ndlp->vport; 164 phba = vport->phba; 165 166 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 167 "rport devlosscb: sid:x%x did:x%x flg:x%x", 168 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag); 169 170 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 171 "3181 dev_loss_callbk x%06x, rport x%px flg x%x " 172 "load_flag x%x refcnt %d\n", 173 ndlp->nlp_DID, ndlp->rport, ndlp->nlp_flag, 174 vport->load_flag, kref_read(&ndlp->kref)); 175 176 /* Don't schedule a worker thread event if the vport is going down. 177 * The teardown process cleans up the node via lpfc_drop_node. 178 */ 179 if (vport->load_flag & FC_UNLOADING) { 180 ((struct lpfc_rport_data *)rport->dd_data)->pnode = NULL; 181 ndlp->rport = NULL; 182 183 ndlp->fc4_xpt_flags &= ~SCSI_XPT_REGD; 184 185 /* Remove the node reference from remote_port_add now. 186 * The driver will not call remote_port_delete. 187 */ 188 lpfc_nlp_put(ndlp); 189 return; 190 } 191 192 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) 193 return; 194 195 if (rport->port_name != wwn_to_u64(ndlp->nlp_portname.u.wwn)) 196 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 197 "6789 rport name %llx != node port name %llx", 198 rport->port_name, 199 wwn_to_u64(ndlp->nlp_portname.u.wwn)); 200 201 evtp = &ndlp->dev_loss_evt; 202 203 if (!list_empty(&evtp->evt_listp)) { 204 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 205 "6790 rport name %llx dev_loss_evt pending\n", 206 rport->port_name); 207 return; 208 } 209 210 spin_lock_irqsave(&ndlp->lock, iflags); 211 ndlp->nlp_flag |= NLP_IN_DEV_LOSS; 212 213 /* If there is a PLOGI in progress, and we are in a 214 * NLP_NPR_2B_DISC state, don't turn off the flag. 215 */ 216 if (ndlp->nlp_state != NLP_STE_PLOGI_ISSUE) 217 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; 218 219 /* 220 * The backend does not expect any more calls associated with this 221 * rport. Remove the association between rport and ndlp. 222 */ 223 ndlp->fc4_xpt_flags &= ~SCSI_XPT_REGD; 224 ((struct lpfc_rport_data *)rport->dd_data)->pnode = NULL; 225 ndlp->rport = NULL; 226 spin_unlock_irqrestore(&ndlp->lock, iflags); 227 228 /* We need to hold the node by incrementing the reference 229 * count until this queued work is done 230 */ 231 evtp->evt_arg1 = lpfc_nlp_get(ndlp); 232 233 spin_lock_irqsave(&phba->hbalock, iflags); 234 if (evtp->evt_arg1) { 235 evtp->evt = LPFC_EVT_DEV_LOSS; 236 list_add_tail(&evtp->evt_listp, &phba->work_list); 237 lpfc_worker_wake_up(phba); 238 } 239 spin_unlock_irqrestore(&phba->hbalock, iflags); 240 241 return; 242 } 243 244 /** 245 * lpfc_check_inactive_vmid_one - VMID inactivity checker for a vport 246 * @vport: Pointer to vport context object. 247 * 248 * This function checks for idle VMID entries related to a particular vport. If 249 * found unused/idle, free them accordingly. 250 **/ 251 static void lpfc_check_inactive_vmid_one(struct lpfc_vport *vport) 252 { 253 u16 keep; 254 u32 difftime = 0, r, bucket; 255 u64 *lta; 256 int cpu; 257 struct lpfc_vmid *vmp; 258 259 write_lock(&vport->vmid_lock); 260 261 if (!vport->cur_vmid_cnt) 262 goto out; 263 264 /* iterate through the table */ 265 hash_for_each(vport->hash_table, bucket, vmp, hnode) { 266 keep = 0; 267 if (vmp->flag & LPFC_VMID_REGISTERED) { 268 /* check if the particular VMID is in use */ 269 /* for all available per cpu variable */ 270 for_each_possible_cpu(cpu) { 271 /* if last access time is less than timeout */ 272 lta = per_cpu_ptr(vmp->last_io_time, cpu); 273 if (!lta) 274 continue; 275 difftime = (jiffies) - (*lta); 276 if ((vport->vmid_inactivity_timeout * 277 JIFFIES_PER_HR) > difftime) { 278 keep = 1; 279 break; 280 } 281 } 282 283 /* if none of the cpus have been used by the vm, */ 284 /* remove the entry if already registered */ 285 if (!keep) { 286 /* mark the entry for deregistration */ 287 vmp->flag = LPFC_VMID_DE_REGISTER; 288 write_unlock(&vport->vmid_lock); 289 if (vport->vmid_priority_tagging) 290 r = lpfc_vmid_uvem(vport, vmp, false); 291 else 292 r = lpfc_vmid_cmd(vport, 293 SLI_CTAS_DAPP_IDENT, 294 vmp); 295 296 /* decrement number of active vms and mark */ 297 /* entry in slot as free */ 298 write_lock(&vport->vmid_lock); 299 if (!r) { 300 struct lpfc_vmid *ht = vmp; 301 302 vport->cur_vmid_cnt--; 303 ht->flag = LPFC_VMID_SLOT_FREE; 304 free_percpu(ht->last_io_time); 305 ht->last_io_time = NULL; 306 hash_del(&ht->hnode); 307 } 308 } 309 } 310 } 311 out: 312 write_unlock(&vport->vmid_lock); 313 } 314 315 /** 316 * lpfc_check_inactive_vmid - VMID inactivity checker 317 * @phba: Pointer to hba context object. 318 * 319 * This function is called from the worker thread to determine if an entry in 320 * the VMID table can be released since there was no I/O activity seen from that 321 * particular VM for the specified time. When this happens, the entry in the 322 * table is released and also the resources on the switch cleared. 323 **/ 324 325 static void lpfc_check_inactive_vmid(struct lpfc_hba *phba) 326 { 327 struct lpfc_vport *vport; 328 struct lpfc_vport **vports; 329 int i; 330 331 vports = lpfc_create_vport_work_array(phba); 332 if (!vports) 333 return; 334 335 for (i = 0; i <= phba->max_vports; i++) { 336 if ((!vports[i]) && (i == 0)) 337 vport = phba->pport; 338 else 339 vport = vports[i]; 340 if (!vport) 341 break; 342 343 lpfc_check_inactive_vmid_one(vport); 344 } 345 lpfc_destroy_vport_work_array(phba, vports); 346 } 347 348 /** 349 * lpfc_check_nlp_post_devloss - Check to restore ndlp refcnt after devloss 350 * @vport: Pointer to vport object. 351 * @ndlp: Pointer to remote node object. 352 * 353 * If NLP_IN_RECOV_POST_DEV_LOSS flag was set due to outstanding recovery of 354 * node during dev_loss_tmo processing, then this function restores the nlp_put 355 * kref decrement from lpfc_dev_loss_tmo_handler. 356 **/ 357 void 358 lpfc_check_nlp_post_devloss(struct lpfc_vport *vport, 359 struct lpfc_nodelist *ndlp) 360 { 361 unsigned long iflags; 362 363 spin_lock_irqsave(&ndlp->lock, iflags); 364 if (ndlp->save_flags & NLP_IN_RECOV_POST_DEV_LOSS) { 365 ndlp->save_flags &= ~NLP_IN_RECOV_POST_DEV_LOSS; 366 spin_unlock_irqrestore(&ndlp->lock, iflags); 367 lpfc_nlp_get(ndlp); 368 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY | LOG_NODE, 369 "8438 Devloss timeout reversed on DID x%x " 370 "refcnt %d ndlp %p flag x%x " 371 "port_state = x%x\n", 372 ndlp->nlp_DID, kref_read(&ndlp->kref), ndlp, 373 ndlp->nlp_flag, vport->port_state); 374 spin_lock_irqsave(&ndlp->lock, iflags); 375 } 376 spin_unlock_irqrestore(&ndlp->lock, iflags); 377 } 378 379 /** 380 * lpfc_dev_loss_tmo_handler - Remote node devloss timeout handler 381 * @ndlp: Pointer to remote node object. 382 * 383 * This function is called from the worker thread when devloss timeout timer 384 * expires. For SLI4 host, this routine shall return 1 when at lease one 385 * remote node, including this @ndlp, is still in use of FCF; otherwise, this 386 * routine shall return 0 when there is no remote node is still in use of FCF 387 * when devloss timeout happened to this @ndlp. 388 **/ 389 static int 390 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp) 391 { 392 struct lpfc_vport *vport; 393 struct lpfc_hba *phba; 394 uint8_t *name; 395 int warn_on = 0; 396 int fcf_inuse = 0; 397 bool recovering = false; 398 struct fc_vport *fc_vport = NULL; 399 unsigned long iflags; 400 401 vport = ndlp->vport; 402 name = (uint8_t *)&ndlp->nlp_portname; 403 phba = vport->phba; 404 405 spin_lock_irqsave(&ndlp->lock, iflags); 406 ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS; 407 spin_unlock_irqrestore(&ndlp->lock, iflags); 408 409 if (phba->sli_rev == LPFC_SLI_REV4) 410 fcf_inuse = lpfc_fcf_inuse(phba); 411 412 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 413 "rport devlosstmo:did:x%x type:x%x id:x%x", 414 ndlp->nlp_DID, ndlp->nlp_type, ndlp->nlp_sid); 415 416 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 417 "3182 %s x%06x, nflag x%x xflags x%x refcnt %d\n", 418 __func__, ndlp->nlp_DID, ndlp->nlp_flag, 419 ndlp->fc4_xpt_flags, kref_read(&ndlp->kref)); 420 421 /* If the driver is recovering the rport, ignore devloss. */ 422 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) { 423 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 424 "0284 Devloss timeout Ignored on " 425 "WWPN %x:%x:%x:%x:%x:%x:%x:%x " 426 "NPort x%x\n", 427 *name, *(name+1), *(name+2), *(name+3), 428 *(name+4), *(name+5), *(name+6), *(name+7), 429 ndlp->nlp_DID); 430 return fcf_inuse; 431 } 432 433 /* Fabric nodes are done. */ 434 if (ndlp->nlp_type & NLP_FABRIC) { 435 spin_lock_irqsave(&ndlp->lock, iflags); 436 /* In massive vport configuration settings, it's possible 437 * dev_loss_tmo fired during node recovery. So, check if 438 * fabric nodes are in discovery states outstanding. 439 */ 440 switch (ndlp->nlp_DID) { 441 case Fabric_DID: 442 fc_vport = vport->fc_vport; 443 if (fc_vport && 444 fc_vport->vport_state == FC_VPORT_INITIALIZING) 445 recovering = true; 446 break; 447 case Fabric_Cntl_DID: 448 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND) 449 recovering = true; 450 break; 451 case FDMI_DID: 452 fallthrough; 453 case NameServer_DID: 454 if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE && 455 ndlp->nlp_state <= NLP_STE_REG_LOGIN_ISSUE) 456 recovering = true; 457 break; 458 } 459 spin_unlock_irqrestore(&ndlp->lock, iflags); 460 461 /* Mark an NLP_IN_RECOV_POST_DEV_LOSS flag to know if reversing 462 * the following lpfc_nlp_put is necessary after fabric node is 463 * recovered. 464 */ 465 if (recovering) { 466 lpfc_printf_vlog(vport, KERN_INFO, 467 LOG_DISCOVERY | LOG_NODE, 468 "8436 Devloss timeout marked on " 469 "DID x%x refcnt %d ndlp %p " 470 "flag x%x port_state = x%x\n", 471 ndlp->nlp_DID, kref_read(&ndlp->kref), 472 ndlp, ndlp->nlp_flag, 473 vport->port_state); 474 spin_lock_irqsave(&ndlp->lock, iflags); 475 ndlp->save_flags |= NLP_IN_RECOV_POST_DEV_LOSS; 476 spin_unlock_irqrestore(&ndlp->lock, iflags); 477 } else if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) { 478 /* Fabric node fully recovered before this dev_loss_tmo 479 * queue work is processed. Thus, ignore the 480 * dev_loss_tmo event. 481 */ 482 lpfc_printf_vlog(vport, KERN_INFO, 483 LOG_DISCOVERY | LOG_NODE, 484 "8437 Devloss timeout ignored on " 485 "DID x%x refcnt %d ndlp %p " 486 "flag x%x port_state = x%x\n", 487 ndlp->nlp_DID, kref_read(&ndlp->kref), 488 ndlp, ndlp->nlp_flag, 489 vport->port_state); 490 return fcf_inuse; 491 } 492 493 lpfc_nlp_put(ndlp); 494 return fcf_inuse; 495 } 496 497 if (ndlp->nlp_sid != NLP_NO_SID) { 498 warn_on = 1; 499 lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT); 500 } 501 502 if (warn_on) { 503 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 504 "0203 Devloss timeout on " 505 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x " 506 "NPort x%06x Data: x%x x%x x%x\n", 507 *name, *(name+1), *(name+2), *(name+3), 508 *(name+4), *(name+5), *(name+6), *(name+7), 509 ndlp->nlp_DID, ndlp->nlp_flag, 510 ndlp->nlp_state, ndlp->nlp_rpi); 511 } else { 512 lpfc_printf_vlog(vport, KERN_INFO, LOG_TRACE_EVENT, 513 "0204 Devloss timeout on " 514 "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x " 515 "NPort x%06x Data: x%x x%x x%x\n", 516 *name, *(name+1), *(name+2), *(name+3), 517 *(name+4), *(name+5), *(name+6), *(name+7), 518 ndlp->nlp_DID, ndlp->nlp_flag, 519 ndlp->nlp_state, ndlp->nlp_rpi); 520 } 521 522 /* If we are devloss, but we are in the process of rediscovering the 523 * ndlp, don't issue a NLP_EVT_DEVICE_RM event. 524 */ 525 if (ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE && 526 ndlp->nlp_state <= NLP_STE_PRLI_ISSUE) { 527 return fcf_inuse; 528 } 529 530 if (!(ndlp->fc4_xpt_flags & NVME_XPT_REGD)) 531 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM); 532 533 return fcf_inuse; 534 } 535 536 static void lpfc_check_vmid_qfpa_issue(struct lpfc_hba *phba) 537 { 538 struct lpfc_vport *vport; 539 struct lpfc_vport **vports; 540 int i; 541 542 vports = lpfc_create_vport_work_array(phba); 543 if (!vports) 544 return; 545 546 for (i = 0; i <= phba->max_vports; i++) { 547 if ((!vports[i]) && (i == 0)) 548 vport = phba->pport; 549 else 550 vport = vports[i]; 551 if (!vport) 552 break; 553 554 if (vport->vmid_flag & LPFC_VMID_ISSUE_QFPA) { 555 if (!lpfc_issue_els_qfpa(vport)) 556 vport->vmid_flag &= ~LPFC_VMID_ISSUE_QFPA; 557 } 558 } 559 lpfc_destroy_vport_work_array(phba, vports); 560 } 561 562 /** 563 * lpfc_sli4_post_dev_loss_tmo_handler - SLI4 post devloss timeout handler 564 * @phba: Pointer to hba context object. 565 * @fcf_inuse: SLI4 FCF in-use state reported from devloss timeout handler. 566 * @nlp_did: remote node identifer with devloss timeout. 567 * 568 * This function is called from the worker thread after invoking devloss 569 * timeout handler and releasing the reference count for the ndlp with 570 * which the devloss timeout was handled for SLI4 host. For the devloss 571 * timeout of the last remote node which had been in use of FCF, when this 572 * routine is invoked, it shall be guaranteed that none of the remote are 573 * in-use of FCF. When devloss timeout to the last remote using the FCF, 574 * if the FIP engine is neither in FCF table scan process nor roundrobin 575 * failover process, the in-use FCF shall be unregistered. If the FIP 576 * engine is in FCF discovery process, the devloss timeout state shall 577 * be set for either the FCF table scan process or roundrobin failover 578 * process to unregister the in-use FCF. 579 **/ 580 static void 581 lpfc_sli4_post_dev_loss_tmo_handler(struct lpfc_hba *phba, int fcf_inuse, 582 uint32_t nlp_did) 583 { 584 /* If devloss timeout happened to a remote node when FCF had no 585 * longer been in-use, do nothing. 586 */ 587 if (!fcf_inuse) 588 return; 589 590 if ((phba->hba_flag & HBA_FIP_SUPPORT) && !lpfc_fcf_inuse(phba)) { 591 spin_lock_irq(&phba->hbalock); 592 if (phba->fcf.fcf_flag & FCF_DISCOVERY) { 593 if (phba->hba_flag & HBA_DEVLOSS_TMO) { 594 spin_unlock_irq(&phba->hbalock); 595 return; 596 } 597 phba->hba_flag |= HBA_DEVLOSS_TMO; 598 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 599 "2847 Last remote node (x%x) using " 600 "FCF devloss tmo\n", nlp_did); 601 } 602 if (phba->fcf.fcf_flag & FCF_REDISC_PROG) { 603 spin_unlock_irq(&phba->hbalock); 604 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 605 "2868 Devloss tmo to FCF rediscovery " 606 "in progress\n"); 607 return; 608 } 609 if (!(phba->hba_flag & (FCF_TS_INPROG | FCF_RR_INPROG))) { 610 spin_unlock_irq(&phba->hbalock); 611 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 612 "2869 Devloss tmo to idle FIP engine, " 613 "unreg in-use FCF and rescan.\n"); 614 /* Unregister in-use FCF and rescan */ 615 lpfc_unregister_fcf_rescan(phba); 616 return; 617 } 618 spin_unlock_irq(&phba->hbalock); 619 if (phba->hba_flag & FCF_TS_INPROG) 620 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 621 "2870 FCF table scan in progress\n"); 622 if (phba->hba_flag & FCF_RR_INPROG) 623 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 624 "2871 FLOGI roundrobin FCF failover " 625 "in progress\n"); 626 } 627 lpfc_unregister_unused_fcf(phba); 628 } 629 630 /** 631 * lpfc_alloc_fast_evt - Allocates data structure for posting event 632 * @phba: Pointer to hba context object. 633 * 634 * This function is called from the functions which need to post 635 * events from interrupt context. This function allocates data 636 * structure required for posting event. It also keeps track of 637 * number of events pending and prevent event storm when there are 638 * too many events. 639 **/ 640 struct lpfc_fast_path_event * 641 lpfc_alloc_fast_evt(struct lpfc_hba *phba) { 642 struct lpfc_fast_path_event *ret; 643 644 /* If there are lot of fast event do not exhaust memory due to this */ 645 if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT) 646 return NULL; 647 648 ret = kzalloc(sizeof(struct lpfc_fast_path_event), 649 GFP_ATOMIC); 650 if (ret) { 651 atomic_inc(&phba->fast_event_count); 652 INIT_LIST_HEAD(&ret->work_evt.evt_listp); 653 ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT; 654 } 655 return ret; 656 } 657 658 /** 659 * lpfc_free_fast_evt - Frees event data structure 660 * @phba: Pointer to hba context object. 661 * @evt: Event object which need to be freed. 662 * 663 * This function frees the data structure required for posting 664 * events. 665 **/ 666 void 667 lpfc_free_fast_evt(struct lpfc_hba *phba, 668 struct lpfc_fast_path_event *evt) { 669 670 atomic_dec(&phba->fast_event_count); 671 kfree(evt); 672 } 673 674 /** 675 * lpfc_send_fastpath_evt - Posts events generated from fast path 676 * @phba: Pointer to hba context object. 677 * @evtp: Event data structure. 678 * 679 * This function is called from worker thread, when the interrupt 680 * context need to post an event. This function posts the event 681 * to fc transport netlink interface. 682 **/ 683 static void 684 lpfc_send_fastpath_evt(struct lpfc_hba *phba, 685 struct lpfc_work_evt *evtp) 686 { 687 unsigned long evt_category, evt_sub_category; 688 struct lpfc_fast_path_event *fast_evt_data; 689 char *evt_data; 690 uint32_t evt_data_size; 691 struct Scsi_Host *shost; 692 693 fast_evt_data = container_of(evtp, struct lpfc_fast_path_event, 694 work_evt); 695 696 evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type; 697 evt_sub_category = (unsigned long) fast_evt_data->un. 698 fabric_evt.subcategory; 699 shost = lpfc_shost_from_vport(fast_evt_data->vport); 700 if (evt_category == FC_REG_FABRIC_EVENT) { 701 if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) { 702 evt_data = (char *) &fast_evt_data->un.read_check_error; 703 evt_data_size = sizeof(fast_evt_data->un. 704 read_check_error); 705 } else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) || 706 (evt_sub_category == LPFC_EVENT_PORT_BUSY)) { 707 evt_data = (char *) &fast_evt_data->un.fabric_evt; 708 evt_data_size = sizeof(fast_evt_data->un.fabric_evt); 709 } else { 710 lpfc_free_fast_evt(phba, fast_evt_data); 711 return; 712 } 713 } else if (evt_category == FC_REG_SCSI_EVENT) { 714 switch (evt_sub_category) { 715 case LPFC_EVENT_QFULL: 716 case LPFC_EVENT_DEVBSY: 717 evt_data = (char *) &fast_evt_data->un.scsi_evt; 718 evt_data_size = sizeof(fast_evt_data->un.scsi_evt); 719 break; 720 case LPFC_EVENT_CHECK_COND: 721 evt_data = (char *) &fast_evt_data->un.check_cond_evt; 722 evt_data_size = sizeof(fast_evt_data->un. 723 check_cond_evt); 724 break; 725 case LPFC_EVENT_VARQUEDEPTH: 726 evt_data = (char *) &fast_evt_data->un.queue_depth_evt; 727 evt_data_size = sizeof(fast_evt_data->un. 728 queue_depth_evt); 729 break; 730 default: 731 lpfc_free_fast_evt(phba, fast_evt_data); 732 return; 733 } 734 } else { 735 lpfc_free_fast_evt(phba, fast_evt_data); 736 return; 737 } 738 739 if (phba->cfg_enable_fc4_type != LPFC_ENABLE_NVME) 740 fc_host_post_vendor_event(shost, 741 fc_get_event_number(), 742 evt_data_size, 743 evt_data, 744 LPFC_NL_VENDOR_ID); 745 746 lpfc_free_fast_evt(phba, fast_evt_data); 747 return; 748 } 749 750 static void 751 lpfc_work_list_done(struct lpfc_hba *phba) 752 { 753 struct lpfc_work_evt *evtp = NULL; 754 struct lpfc_nodelist *ndlp; 755 int free_evt; 756 int fcf_inuse; 757 uint32_t nlp_did; 758 759 spin_lock_irq(&phba->hbalock); 760 while (!list_empty(&phba->work_list)) { 761 list_remove_head((&phba->work_list), evtp, typeof(*evtp), 762 evt_listp); 763 spin_unlock_irq(&phba->hbalock); 764 free_evt = 1; 765 switch (evtp->evt) { 766 case LPFC_EVT_ELS_RETRY: 767 ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1); 768 lpfc_els_retry_delay_handler(ndlp); 769 free_evt = 0; /* evt is part of ndlp */ 770 /* decrement the node reference count held 771 * for this queued work 772 */ 773 lpfc_nlp_put(ndlp); 774 break; 775 case LPFC_EVT_DEV_LOSS: 776 ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1); 777 fcf_inuse = lpfc_dev_loss_tmo_handler(ndlp); 778 free_evt = 0; 779 /* decrement the node reference count held for 780 * this queued work 781 */ 782 nlp_did = ndlp->nlp_DID; 783 lpfc_nlp_put(ndlp); 784 if (phba->sli_rev == LPFC_SLI_REV4) 785 lpfc_sli4_post_dev_loss_tmo_handler(phba, 786 fcf_inuse, 787 nlp_did); 788 break; 789 case LPFC_EVT_RECOVER_PORT: 790 ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1); 791 lpfc_sli_abts_recover_port(ndlp->vport, ndlp); 792 free_evt = 0; 793 /* decrement the node reference count held for 794 * this queued work 795 */ 796 lpfc_nlp_put(ndlp); 797 break; 798 case LPFC_EVT_ONLINE: 799 if (phba->link_state < LPFC_LINK_DOWN) 800 *(int *) (evtp->evt_arg1) = lpfc_online(phba); 801 else 802 *(int *) (evtp->evt_arg1) = 0; 803 complete((struct completion *)(evtp->evt_arg2)); 804 break; 805 case LPFC_EVT_OFFLINE_PREP: 806 if (phba->link_state >= LPFC_LINK_DOWN) 807 lpfc_offline_prep(phba, LPFC_MBX_WAIT); 808 *(int *)(evtp->evt_arg1) = 0; 809 complete((struct completion *)(evtp->evt_arg2)); 810 break; 811 case LPFC_EVT_OFFLINE: 812 lpfc_offline(phba); 813 lpfc_sli_brdrestart(phba); 814 *(int *)(evtp->evt_arg1) = 815 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY); 816 lpfc_unblock_mgmt_io(phba); 817 complete((struct completion *)(evtp->evt_arg2)); 818 break; 819 case LPFC_EVT_WARM_START: 820 lpfc_offline(phba); 821 lpfc_reset_barrier(phba); 822 lpfc_sli_brdreset(phba); 823 lpfc_hba_down_post(phba); 824 *(int *)(evtp->evt_arg1) = 825 lpfc_sli_brdready(phba, HS_MBRDY); 826 lpfc_unblock_mgmt_io(phba); 827 complete((struct completion *)(evtp->evt_arg2)); 828 break; 829 case LPFC_EVT_KILL: 830 lpfc_offline(phba); 831 *(int *)(evtp->evt_arg1) 832 = (phba->pport->stopped) 833 ? 0 : lpfc_sli_brdkill(phba); 834 lpfc_unblock_mgmt_io(phba); 835 complete((struct completion *)(evtp->evt_arg2)); 836 break; 837 case LPFC_EVT_FASTPATH_MGMT_EVT: 838 lpfc_send_fastpath_evt(phba, evtp); 839 free_evt = 0; 840 break; 841 case LPFC_EVT_RESET_HBA: 842 if (!(phba->pport->load_flag & FC_UNLOADING)) 843 lpfc_reset_hba(phba); 844 break; 845 } 846 if (free_evt) 847 kfree(evtp); 848 spin_lock_irq(&phba->hbalock); 849 } 850 spin_unlock_irq(&phba->hbalock); 851 852 } 853 854 static void 855 lpfc_work_done(struct lpfc_hba *phba) 856 { 857 struct lpfc_sli_ring *pring; 858 uint32_t ha_copy, status, control, work_port_events; 859 struct lpfc_vport **vports; 860 struct lpfc_vport *vport; 861 int i; 862 863 spin_lock_irq(&phba->hbalock); 864 ha_copy = phba->work_ha; 865 phba->work_ha = 0; 866 spin_unlock_irq(&phba->hbalock); 867 868 /* First, try to post the next mailbox command to SLI4 device */ 869 if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) 870 lpfc_sli4_post_async_mbox(phba); 871 872 if (ha_copy & HA_ERATT) { 873 /* Handle the error attention event */ 874 lpfc_handle_eratt(phba); 875 876 if (phba->fw_dump_cmpl) { 877 complete(phba->fw_dump_cmpl); 878 phba->fw_dump_cmpl = NULL; 879 } 880 } 881 882 if (ha_copy & HA_MBATT) 883 lpfc_sli_handle_mb_event(phba); 884 885 if (ha_copy & HA_LATT) 886 lpfc_handle_latt(phba); 887 888 /* Handle VMID Events */ 889 if (lpfc_is_vmid_enabled(phba)) { 890 if (phba->pport->work_port_events & 891 WORKER_CHECK_VMID_ISSUE_QFPA) { 892 lpfc_check_vmid_qfpa_issue(phba); 893 phba->pport->work_port_events &= 894 ~WORKER_CHECK_VMID_ISSUE_QFPA; 895 } 896 if (phba->pport->work_port_events & 897 WORKER_CHECK_INACTIVE_VMID) { 898 lpfc_check_inactive_vmid(phba); 899 phba->pport->work_port_events &= 900 ~WORKER_CHECK_INACTIVE_VMID; 901 } 902 } 903 904 /* Process SLI4 events */ 905 if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) { 906 if (phba->hba_flag & HBA_RRQ_ACTIVE) 907 lpfc_handle_rrq_active(phba); 908 if (phba->hba_flag & ELS_XRI_ABORT_EVENT) 909 lpfc_sli4_els_xri_abort_event_proc(phba); 910 if (phba->hba_flag & ASYNC_EVENT) 911 lpfc_sli4_async_event_proc(phba); 912 if (phba->hba_flag & HBA_POST_RECEIVE_BUFFER) { 913 spin_lock_irq(&phba->hbalock); 914 phba->hba_flag &= ~HBA_POST_RECEIVE_BUFFER; 915 spin_unlock_irq(&phba->hbalock); 916 lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ); 917 } 918 if (phba->fcf.fcf_flag & FCF_REDISC_EVT) 919 lpfc_sli4_fcf_redisc_event_proc(phba); 920 } 921 922 vports = lpfc_create_vport_work_array(phba); 923 if (vports != NULL) 924 for (i = 0; i <= phba->max_vports; i++) { 925 /* 926 * We could have no vports in array if unloading, so if 927 * this happens then just use the pport 928 */ 929 if (vports[i] == NULL && i == 0) 930 vport = phba->pport; 931 else 932 vport = vports[i]; 933 if (vport == NULL) 934 break; 935 spin_lock_irq(&vport->work_port_lock); 936 work_port_events = vport->work_port_events; 937 vport->work_port_events &= ~work_port_events; 938 spin_unlock_irq(&vport->work_port_lock); 939 if (work_port_events & WORKER_DISC_TMO) 940 lpfc_disc_timeout_handler(vport); 941 if (work_port_events & WORKER_ELS_TMO) 942 lpfc_els_timeout_handler(vport); 943 if (work_port_events & WORKER_HB_TMO) 944 lpfc_hb_timeout_handler(phba); 945 if (work_port_events & WORKER_MBOX_TMO) 946 lpfc_mbox_timeout_handler(phba); 947 if (work_port_events & WORKER_FABRIC_BLOCK_TMO) 948 lpfc_unblock_fabric_iocbs(phba); 949 if (work_port_events & WORKER_RAMP_DOWN_QUEUE) 950 lpfc_ramp_down_queue_handler(phba); 951 if (work_port_events & WORKER_DELAYED_DISC_TMO) 952 lpfc_delayed_disc_timeout_handler(vport); 953 } 954 lpfc_destroy_vport_work_array(phba, vports); 955 956 pring = lpfc_phba_elsring(phba); 957 status = (ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING))); 958 status >>= (4*LPFC_ELS_RING); 959 if (pring && (status & HA_RXMASK || 960 pring->flag & LPFC_DEFERRED_RING_EVENT || 961 phba->hba_flag & HBA_SP_QUEUE_EVT)) { 962 if (pring->flag & LPFC_STOP_IOCB_EVENT) { 963 pring->flag |= LPFC_DEFERRED_RING_EVENT; 964 /* Preserve legacy behavior. */ 965 if (!(phba->hba_flag & HBA_SP_QUEUE_EVT)) 966 set_bit(LPFC_DATA_READY, &phba->data_flags); 967 } else { 968 /* Driver could have abort request completed in queue 969 * when link goes down. Allow for this transition. 970 */ 971 if (phba->link_state >= LPFC_LINK_DOWN || 972 phba->link_flag & LS_MDS_LOOPBACK) { 973 pring->flag &= ~LPFC_DEFERRED_RING_EVENT; 974 lpfc_sli_handle_slow_ring_event(phba, pring, 975 (status & 976 HA_RXMASK)); 977 } 978 } 979 if (phba->sli_rev == LPFC_SLI_REV4) 980 lpfc_drain_txq(phba); 981 /* 982 * Turn on Ring interrupts 983 */ 984 if (phba->sli_rev <= LPFC_SLI_REV3) { 985 spin_lock_irq(&phba->hbalock); 986 control = readl(phba->HCregaddr); 987 if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) { 988 lpfc_debugfs_slow_ring_trc(phba, 989 "WRK Enable ring: cntl:x%x hacopy:x%x", 990 control, ha_copy, 0); 991 992 control |= (HC_R0INT_ENA << LPFC_ELS_RING); 993 writel(control, phba->HCregaddr); 994 readl(phba->HCregaddr); /* flush */ 995 } else { 996 lpfc_debugfs_slow_ring_trc(phba, 997 "WRK Ring ok: cntl:x%x hacopy:x%x", 998 control, ha_copy, 0); 999 } 1000 spin_unlock_irq(&phba->hbalock); 1001 } 1002 } 1003 lpfc_work_list_done(phba); 1004 } 1005 1006 int 1007 lpfc_do_work(void *p) 1008 { 1009 struct lpfc_hba *phba = p; 1010 int rc; 1011 1012 set_user_nice(current, MIN_NICE); 1013 current->flags |= PF_NOFREEZE; 1014 phba->data_flags = 0; 1015 1016 while (!kthread_should_stop()) { 1017 /* wait and check worker queue activities */ 1018 rc = wait_event_interruptible(phba->work_waitq, 1019 (test_and_clear_bit(LPFC_DATA_READY, 1020 &phba->data_flags) 1021 || kthread_should_stop())); 1022 /* Signal wakeup shall terminate the worker thread */ 1023 if (rc) { 1024 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1025 "0433 Wakeup on signal: rc=x%x\n", rc); 1026 break; 1027 } 1028 1029 /* Attend pending lpfc data processing */ 1030 lpfc_work_done(phba); 1031 } 1032 phba->worker_thread = NULL; 1033 lpfc_printf_log(phba, KERN_INFO, LOG_ELS, 1034 "0432 Worker thread stopped.\n"); 1035 return 0; 1036 } 1037 1038 /* 1039 * This is only called to handle FC worker events. Since this a rare 1040 * occurrence, we allocate a struct lpfc_work_evt structure here instead of 1041 * embedding it in the IOCB. 1042 */ 1043 int 1044 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2, 1045 uint32_t evt) 1046 { 1047 struct lpfc_work_evt *evtp; 1048 unsigned long flags; 1049 1050 /* 1051 * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will 1052 * be queued to worker thread for processing 1053 */ 1054 evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC); 1055 if (!evtp) 1056 return 0; 1057 1058 evtp->evt_arg1 = arg1; 1059 evtp->evt_arg2 = arg2; 1060 evtp->evt = evt; 1061 1062 spin_lock_irqsave(&phba->hbalock, flags); 1063 list_add_tail(&evtp->evt_listp, &phba->work_list); 1064 spin_unlock_irqrestore(&phba->hbalock, flags); 1065 1066 lpfc_worker_wake_up(phba); 1067 1068 return 1; 1069 } 1070 1071 void 1072 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove) 1073 { 1074 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1075 struct lpfc_hba *phba = vport->phba; 1076 struct lpfc_nodelist *ndlp, *next_ndlp; 1077 1078 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { 1079 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) { 1080 /* It's possible the FLOGI to the fabric node never 1081 * successfully completed and never registered with the 1082 * transport. In this case there is no way to clean up 1083 * the node. 1084 */ 1085 if (ndlp->nlp_DID == Fabric_DID) { 1086 if (ndlp->nlp_prev_state == 1087 NLP_STE_UNUSED_NODE && 1088 !ndlp->fc4_xpt_flags) 1089 lpfc_nlp_put(ndlp); 1090 } 1091 continue; 1092 } 1093 1094 if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) || 1095 ((vport->port_type == LPFC_NPIV_PORT) && 1096 ((ndlp->nlp_DID == NameServer_DID) || 1097 (ndlp->nlp_DID == FDMI_DID) || 1098 (ndlp->nlp_DID == Fabric_Cntl_DID)))) 1099 lpfc_unreg_rpi(vport, ndlp); 1100 1101 /* Leave Fabric nodes alone on link down */ 1102 if ((phba->sli_rev < LPFC_SLI_REV4) && 1103 (!remove && ndlp->nlp_type & NLP_FABRIC)) 1104 continue; 1105 1106 /* Notify transport of connectivity loss to trigger cleanup. */ 1107 if (phba->nvmet_support && 1108 ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) 1109 lpfc_nvmet_invalidate_host(phba, ndlp); 1110 1111 lpfc_disc_state_machine(vport, ndlp, NULL, 1112 remove 1113 ? NLP_EVT_DEVICE_RM 1114 : NLP_EVT_DEVICE_RECOVERY); 1115 } 1116 if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) { 1117 if (phba->sli_rev == LPFC_SLI_REV4) 1118 lpfc_sli4_unreg_all_rpis(vport); 1119 lpfc_mbx_unreg_vpi(vport); 1120 spin_lock_irq(shost->host_lock); 1121 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; 1122 spin_unlock_irq(shost->host_lock); 1123 } 1124 } 1125 1126 void 1127 lpfc_port_link_failure(struct lpfc_vport *vport) 1128 { 1129 lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN); 1130 1131 /* Cleanup any outstanding received buffers */ 1132 lpfc_cleanup_rcv_buffers(vport); 1133 1134 /* Cleanup any outstanding RSCN activity */ 1135 lpfc_els_flush_rscn(vport); 1136 1137 /* Cleanup any outstanding ELS commands */ 1138 lpfc_els_flush_cmd(vport); 1139 1140 lpfc_cleanup_rpis(vport, 0); 1141 1142 /* Turn off discovery timer if its running */ 1143 lpfc_can_disctmo(vport); 1144 } 1145 1146 void 1147 lpfc_linkdown_port(struct lpfc_vport *vport) 1148 { 1149 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1150 1151 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME) 1152 fc_host_post_event(shost, fc_get_event_number(), 1153 FCH_EVT_LINKDOWN, 0); 1154 1155 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 1156 "Link Down: state:x%x rtry:x%x flg:x%x", 1157 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 1158 1159 lpfc_port_link_failure(vport); 1160 1161 /* Stop delayed Nport discovery */ 1162 spin_lock_irq(shost->host_lock); 1163 vport->fc_flag &= ~FC_DISC_DELAYED; 1164 spin_unlock_irq(shost->host_lock); 1165 del_timer_sync(&vport->delayed_disc_tmo); 1166 } 1167 1168 int 1169 lpfc_linkdown(struct lpfc_hba *phba) 1170 { 1171 struct lpfc_vport *vport = phba->pport; 1172 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1173 struct lpfc_vport **vports; 1174 LPFC_MBOXQ_t *mb; 1175 int i; 1176 1177 if (phba->link_state == LPFC_LINK_DOWN) 1178 return 0; 1179 1180 /* Block all SCSI stack I/Os */ 1181 lpfc_scsi_dev_block(phba); 1182 1183 phba->defer_flogi_acc_flag = false; 1184 1185 spin_lock_irq(&phba->hbalock); 1186 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE); 1187 spin_unlock_irq(&phba->hbalock); 1188 if (phba->link_state > LPFC_LINK_DOWN) { 1189 phba->link_state = LPFC_LINK_DOWN; 1190 if (phba->sli4_hba.conf_trunk) { 1191 phba->trunk_link.link0.state = 0; 1192 phba->trunk_link.link1.state = 0; 1193 phba->trunk_link.link2.state = 0; 1194 phba->trunk_link.link3.state = 0; 1195 phba->sli4_hba.link_state.logical_speed = 1196 LPFC_LINK_SPEED_UNKNOWN; 1197 } 1198 spin_lock_irq(shost->host_lock); 1199 phba->pport->fc_flag &= ~FC_LBIT; 1200 spin_unlock_irq(shost->host_lock); 1201 } 1202 vports = lpfc_create_vport_work_array(phba); 1203 if (vports != NULL) { 1204 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 1205 /* Issue a LINK DOWN event to all nodes */ 1206 lpfc_linkdown_port(vports[i]); 1207 1208 vports[i]->fc_myDID = 0; 1209 1210 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 1211 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) { 1212 if (phba->nvmet_support) 1213 lpfc_nvmet_update_targetport(phba); 1214 else 1215 lpfc_nvme_update_localport(vports[i]); 1216 } 1217 } 1218 } 1219 lpfc_destroy_vport_work_array(phba, vports); 1220 1221 /* Clean up any SLI3 firmware default rpi's */ 1222 if (phba->sli_rev > LPFC_SLI_REV3) 1223 goto skip_unreg_did; 1224 1225 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1226 if (mb) { 1227 lpfc_unreg_did(phba, 0xffff, LPFC_UNREG_ALL_DFLT_RPIS, mb); 1228 mb->vport = vport; 1229 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 1230 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT) 1231 == MBX_NOT_FINISHED) { 1232 mempool_free(mb, phba->mbox_mem_pool); 1233 } 1234 } 1235 1236 skip_unreg_did: 1237 /* Setup myDID for link up if we are in pt2pt mode */ 1238 if (phba->pport->fc_flag & FC_PT2PT) { 1239 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1240 if (mb) { 1241 lpfc_config_link(phba, mb); 1242 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 1243 mb->vport = vport; 1244 if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT) 1245 == MBX_NOT_FINISHED) { 1246 mempool_free(mb, phba->mbox_mem_pool); 1247 } 1248 } 1249 spin_lock_irq(shost->host_lock); 1250 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI); 1251 phba->pport->rcv_flogi_cnt = 0; 1252 spin_unlock_irq(shost->host_lock); 1253 } 1254 return 0; 1255 } 1256 1257 static void 1258 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport) 1259 { 1260 struct lpfc_nodelist *ndlp; 1261 1262 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 1263 ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME); 1264 1265 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 1266 continue; 1267 if (ndlp->nlp_type & NLP_FABRIC) { 1268 /* On Linkup its safe to clean up the ndlp 1269 * from Fabric connections. 1270 */ 1271 if (ndlp->nlp_DID != Fabric_DID) 1272 lpfc_unreg_rpi(vport, ndlp); 1273 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 1274 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) { 1275 /* Fail outstanding IO now since device is 1276 * marked for PLOGI. 1277 */ 1278 lpfc_unreg_rpi(vport, ndlp); 1279 } 1280 } 1281 } 1282 1283 static void 1284 lpfc_linkup_port(struct lpfc_vport *vport) 1285 { 1286 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1287 struct lpfc_hba *phba = vport->phba; 1288 1289 if ((vport->load_flag & FC_UNLOADING) != 0) 1290 return; 1291 1292 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 1293 "Link Up: top:x%x speed:x%x flg:x%x", 1294 phba->fc_topology, phba->fc_linkspeed, phba->link_flag); 1295 1296 /* If NPIV is not enabled, only bring the physical port up */ 1297 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 1298 (vport != phba->pport)) 1299 return; 1300 1301 if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME) 1302 fc_host_post_event(shost, fc_get_event_number(), 1303 FCH_EVT_LINKUP, 0); 1304 1305 spin_lock_irq(shost->host_lock); 1306 vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY | 1307 FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY); 1308 vport->fc_flag |= FC_NDISC_ACTIVE; 1309 vport->fc_ns_retry = 0; 1310 spin_unlock_irq(shost->host_lock); 1311 1312 lpfc_linkup_cleanup_nodes(vport); 1313 } 1314 1315 static int 1316 lpfc_linkup(struct lpfc_hba *phba) 1317 { 1318 struct lpfc_vport **vports; 1319 int i; 1320 struct Scsi_Host *shost = lpfc_shost_from_vport(phba->pport); 1321 1322 phba->link_state = LPFC_LINK_UP; 1323 1324 /* Unblock fabric iocbs if they are blocked */ 1325 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags); 1326 del_timer_sync(&phba->fabric_block_timer); 1327 1328 vports = lpfc_create_vport_work_array(phba); 1329 if (vports != NULL) 1330 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) 1331 lpfc_linkup_port(vports[i]); 1332 lpfc_destroy_vport_work_array(phba, vports); 1333 1334 /* Clear the pport flogi counter in case the link down was 1335 * absorbed without an ACQE. No lock here - in worker thread 1336 * and discovery is synchronized. 1337 */ 1338 spin_lock_irq(shost->host_lock); 1339 phba->pport->rcv_flogi_cnt = 0; 1340 spin_unlock_irq(shost->host_lock); 1341 1342 /* reinitialize initial FLOGI flag */ 1343 phba->hba_flag &= ~(HBA_FLOGI_ISSUED); 1344 phba->defer_flogi_acc_flag = false; 1345 1346 return 0; 1347 } 1348 1349 /* 1350 * This routine handles processing a CLEAR_LA mailbox 1351 * command upon completion. It is setup in the LPFC_MBOXQ 1352 * as the completion routine when the command is 1353 * handed off to the SLI layer. SLI3 only. 1354 */ 1355 static void 1356 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1357 { 1358 struct lpfc_vport *vport = pmb->vport; 1359 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1360 struct lpfc_sli *psli = &phba->sli; 1361 MAILBOX_t *mb = &pmb->u.mb; 1362 uint32_t control; 1363 1364 /* Since we don't do discovery right now, turn these off here */ 1365 psli->sli3_ring[LPFC_EXTRA_RING].flag &= ~LPFC_STOP_IOCB_EVENT; 1366 psli->sli3_ring[LPFC_FCP_RING].flag &= ~LPFC_STOP_IOCB_EVENT; 1367 1368 /* Check for error */ 1369 if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) { 1370 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */ 1371 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1372 "0320 CLEAR_LA mbxStatus error x%x hba " 1373 "state x%x\n", 1374 mb->mbxStatus, vport->port_state); 1375 phba->link_state = LPFC_HBA_ERROR; 1376 goto out; 1377 } 1378 1379 if (vport->port_type == LPFC_PHYSICAL_PORT) 1380 phba->link_state = LPFC_HBA_READY; 1381 1382 spin_lock_irq(&phba->hbalock); 1383 psli->sli_flag |= LPFC_PROCESS_LA; 1384 control = readl(phba->HCregaddr); 1385 control |= HC_LAINT_ENA; 1386 writel(control, phba->HCregaddr); 1387 readl(phba->HCregaddr); /* flush */ 1388 spin_unlock_irq(&phba->hbalock); 1389 mempool_free(pmb, phba->mbox_mem_pool); 1390 return; 1391 1392 out: 1393 /* Device Discovery completes */ 1394 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 1395 "0225 Device Discovery completes\n"); 1396 mempool_free(pmb, phba->mbox_mem_pool); 1397 1398 spin_lock_irq(shost->host_lock); 1399 vport->fc_flag &= ~FC_ABORT_DISCOVERY; 1400 spin_unlock_irq(shost->host_lock); 1401 1402 lpfc_can_disctmo(vport); 1403 1404 /* turn on Link Attention interrupts */ 1405 1406 spin_lock_irq(&phba->hbalock); 1407 psli->sli_flag |= LPFC_PROCESS_LA; 1408 control = readl(phba->HCregaddr); 1409 control |= HC_LAINT_ENA; 1410 writel(control, phba->HCregaddr); 1411 readl(phba->HCregaddr); /* flush */ 1412 spin_unlock_irq(&phba->hbalock); 1413 1414 return; 1415 } 1416 1417 void 1418 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1419 { 1420 struct lpfc_vport *vport = pmb->vport; 1421 LPFC_MBOXQ_t *sparam_mb; 1422 struct lpfc_dmabuf *sparam_mp; 1423 u16 status = pmb->u.mb.mbxStatus; 1424 int rc; 1425 1426 mempool_free(pmb, phba->mbox_mem_pool); 1427 1428 if (status) 1429 goto out; 1430 1431 /* don't perform discovery for SLI4 loopback diagnostic test */ 1432 if ((phba->sli_rev == LPFC_SLI_REV4) && 1433 !(phba->hba_flag & HBA_FCOE_MODE) && 1434 (phba->link_flag & LS_LOOPBACK_MODE)) 1435 return; 1436 1437 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP && 1438 vport->fc_flag & FC_PUBLIC_LOOP && 1439 !(vport->fc_flag & FC_LBIT)) { 1440 /* Need to wait for FAN - use discovery timer 1441 * for timeout. port_state is identically 1442 * LPFC_LOCAL_CFG_LINK while waiting for FAN 1443 */ 1444 lpfc_set_disctmo(vport); 1445 return; 1446 } 1447 1448 /* Start discovery by sending a FLOGI. port_state is identically 1449 * LPFC_FLOGI while waiting for FLOGI cmpl. 1450 */ 1451 if (vport->port_state != LPFC_FLOGI) { 1452 /* Issue MBX_READ_SPARAM to update CSPs before FLOGI if 1453 * bb-credit recovery is in place. 1454 */ 1455 if (phba->bbcredit_support && phba->cfg_enable_bbcr && 1456 !(phba->link_flag & LS_LOOPBACK_MODE)) { 1457 sparam_mb = mempool_alloc(phba->mbox_mem_pool, 1458 GFP_KERNEL); 1459 if (!sparam_mb) 1460 goto sparam_out; 1461 1462 rc = lpfc_read_sparam(phba, sparam_mb, 0); 1463 if (rc) { 1464 mempool_free(sparam_mb, phba->mbox_mem_pool); 1465 goto sparam_out; 1466 } 1467 sparam_mb->vport = vport; 1468 sparam_mb->mbox_cmpl = lpfc_mbx_cmpl_read_sparam; 1469 rc = lpfc_sli_issue_mbox(phba, sparam_mb, MBX_NOWAIT); 1470 if (rc == MBX_NOT_FINISHED) { 1471 sparam_mp = (struct lpfc_dmabuf *) 1472 sparam_mb->ctx_buf; 1473 lpfc_mbuf_free(phba, sparam_mp->virt, 1474 sparam_mp->phys); 1475 kfree(sparam_mp); 1476 sparam_mb->ctx_buf = NULL; 1477 mempool_free(sparam_mb, phba->mbox_mem_pool); 1478 goto sparam_out; 1479 } 1480 1481 phba->hba_flag |= HBA_DEFER_FLOGI; 1482 } else { 1483 lpfc_initial_flogi(vport); 1484 } 1485 } else { 1486 if (vport->fc_flag & FC_PT2PT) 1487 lpfc_disc_start(vport); 1488 } 1489 return; 1490 1491 out: 1492 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1493 "0306 CONFIG_LINK mbxStatus error x%x HBA state x%x\n", 1494 status, vport->port_state); 1495 1496 sparam_out: 1497 lpfc_linkdown(phba); 1498 1499 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1500 "0200 CONFIG_LINK bad hba state x%x\n", 1501 vport->port_state); 1502 1503 lpfc_issue_clear_la(phba, vport); 1504 return; 1505 } 1506 1507 /** 1508 * lpfc_sli4_clear_fcf_rr_bmask 1509 * @phba: pointer to the struct lpfc_hba for this port. 1510 * This fucnction resets the round robin bit mask and clears the 1511 * fcf priority list. The list deletions are done while holding the 1512 * hbalock. The ON_LIST flag and the FLOGI_FAILED flags are cleared 1513 * from the lpfc_fcf_pri record. 1514 **/ 1515 void 1516 lpfc_sli4_clear_fcf_rr_bmask(struct lpfc_hba *phba) 1517 { 1518 struct lpfc_fcf_pri *fcf_pri; 1519 struct lpfc_fcf_pri *next_fcf_pri; 1520 memset(phba->fcf.fcf_rr_bmask, 0, sizeof(*phba->fcf.fcf_rr_bmask)); 1521 spin_lock_irq(&phba->hbalock); 1522 list_for_each_entry_safe(fcf_pri, next_fcf_pri, 1523 &phba->fcf.fcf_pri_list, list) { 1524 list_del_init(&fcf_pri->list); 1525 fcf_pri->fcf_rec.flag = 0; 1526 } 1527 spin_unlock_irq(&phba->hbalock); 1528 } 1529 static void 1530 lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 1531 { 1532 struct lpfc_vport *vport = mboxq->vport; 1533 1534 if (mboxq->u.mb.mbxStatus) { 1535 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1536 "2017 REG_FCFI mbxStatus error x%x " 1537 "HBA state x%x\n", mboxq->u.mb.mbxStatus, 1538 vport->port_state); 1539 goto fail_out; 1540 } 1541 1542 /* Start FCoE discovery by sending a FLOGI. */ 1543 phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi); 1544 /* Set the FCFI registered flag */ 1545 spin_lock_irq(&phba->hbalock); 1546 phba->fcf.fcf_flag |= FCF_REGISTERED; 1547 spin_unlock_irq(&phba->hbalock); 1548 1549 /* If there is a pending FCoE event, restart FCF table scan. */ 1550 if ((!(phba->hba_flag & FCF_RR_INPROG)) && 1551 lpfc_check_pending_fcoe_event(phba, LPFC_UNREG_FCF)) 1552 goto fail_out; 1553 1554 /* Mark successful completion of FCF table scan */ 1555 spin_lock_irq(&phba->hbalock); 1556 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE); 1557 phba->hba_flag &= ~FCF_TS_INPROG; 1558 if (vport->port_state != LPFC_FLOGI) { 1559 phba->hba_flag |= FCF_RR_INPROG; 1560 spin_unlock_irq(&phba->hbalock); 1561 lpfc_issue_init_vfi(vport); 1562 goto out; 1563 } 1564 spin_unlock_irq(&phba->hbalock); 1565 goto out; 1566 1567 fail_out: 1568 spin_lock_irq(&phba->hbalock); 1569 phba->hba_flag &= ~FCF_RR_INPROG; 1570 spin_unlock_irq(&phba->hbalock); 1571 out: 1572 mempool_free(mboxq, phba->mbox_mem_pool); 1573 } 1574 1575 /** 1576 * lpfc_fab_name_match - Check if the fcf fabric name match. 1577 * @fab_name: pointer to fabric name. 1578 * @new_fcf_record: pointer to fcf record. 1579 * 1580 * This routine compare the fcf record's fabric name with provided 1581 * fabric name. If the fabric name are identical this function 1582 * returns 1 else return 0. 1583 **/ 1584 static uint32_t 1585 lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record) 1586 { 1587 if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record)) 1588 return 0; 1589 if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record)) 1590 return 0; 1591 if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record)) 1592 return 0; 1593 if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record)) 1594 return 0; 1595 if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record)) 1596 return 0; 1597 if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record)) 1598 return 0; 1599 if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record)) 1600 return 0; 1601 if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record)) 1602 return 0; 1603 return 1; 1604 } 1605 1606 /** 1607 * lpfc_sw_name_match - Check if the fcf switch name match. 1608 * @sw_name: pointer to switch name. 1609 * @new_fcf_record: pointer to fcf record. 1610 * 1611 * This routine compare the fcf record's switch name with provided 1612 * switch name. If the switch name are identical this function 1613 * returns 1 else return 0. 1614 **/ 1615 static uint32_t 1616 lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record) 1617 { 1618 if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record)) 1619 return 0; 1620 if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record)) 1621 return 0; 1622 if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record)) 1623 return 0; 1624 if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record)) 1625 return 0; 1626 if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record)) 1627 return 0; 1628 if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record)) 1629 return 0; 1630 if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record)) 1631 return 0; 1632 if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record)) 1633 return 0; 1634 return 1; 1635 } 1636 1637 /** 1638 * lpfc_mac_addr_match - Check if the fcf mac address match. 1639 * @mac_addr: pointer to mac address. 1640 * @new_fcf_record: pointer to fcf record. 1641 * 1642 * This routine compare the fcf record's mac address with HBA's 1643 * FCF mac address. If the mac addresses are identical this function 1644 * returns 1 else return 0. 1645 **/ 1646 static uint32_t 1647 lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record) 1648 { 1649 if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record)) 1650 return 0; 1651 if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record)) 1652 return 0; 1653 if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record)) 1654 return 0; 1655 if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record)) 1656 return 0; 1657 if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record)) 1658 return 0; 1659 if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record)) 1660 return 0; 1661 return 1; 1662 } 1663 1664 static bool 1665 lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id) 1666 { 1667 return (curr_vlan_id == new_vlan_id); 1668 } 1669 1670 /** 1671 * __lpfc_update_fcf_record_pri - update the lpfc_fcf_pri record. 1672 * @phba: pointer to lpfc hba data structure. 1673 * @fcf_index: Index for the lpfc_fcf_record. 1674 * @new_fcf_record: pointer to hba fcf record. 1675 * 1676 * This routine updates the driver FCF priority record from the new HBA FCF 1677 * record. The hbalock is asserted held in the code path calling this 1678 * routine. 1679 **/ 1680 static void 1681 __lpfc_update_fcf_record_pri(struct lpfc_hba *phba, uint16_t fcf_index, 1682 struct fcf_record *new_fcf_record 1683 ) 1684 { 1685 struct lpfc_fcf_pri *fcf_pri; 1686 1687 fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 1688 fcf_pri->fcf_rec.fcf_index = fcf_index; 1689 /* FCF record priority */ 1690 fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority; 1691 1692 } 1693 1694 /** 1695 * lpfc_copy_fcf_record - Copy fcf information to lpfc_hba. 1696 * @fcf_rec: pointer to driver fcf record. 1697 * @new_fcf_record: pointer to fcf record. 1698 * 1699 * This routine copies the FCF information from the FCF 1700 * record to lpfc_hba data structure. 1701 **/ 1702 static void 1703 lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec, 1704 struct fcf_record *new_fcf_record) 1705 { 1706 /* Fabric name */ 1707 fcf_rec->fabric_name[0] = 1708 bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record); 1709 fcf_rec->fabric_name[1] = 1710 bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record); 1711 fcf_rec->fabric_name[2] = 1712 bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record); 1713 fcf_rec->fabric_name[3] = 1714 bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record); 1715 fcf_rec->fabric_name[4] = 1716 bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record); 1717 fcf_rec->fabric_name[5] = 1718 bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record); 1719 fcf_rec->fabric_name[6] = 1720 bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record); 1721 fcf_rec->fabric_name[7] = 1722 bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record); 1723 /* Mac address */ 1724 fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record); 1725 fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record); 1726 fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record); 1727 fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record); 1728 fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record); 1729 fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record); 1730 /* FCF record index */ 1731 fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 1732 /* FCF record priority */ 1733 fcf_rec->priority = new_fcf_record->fip_priority; 1734 /* Switch name */ 1735 fcf_rec->switch_name[0] = 1736 bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record); 1737 fcf_rec->switch_name[1] = 1738 bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record); 1739 fcf_rec->switch_name[2] = 1740 bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record); 1741 fcf_rec->switch_name[3] = 1742 bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record); 1743 fcf_rec->switch_name[4] = 1744 bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record); 1745 fcf_rec->switch_name[5] = 1746 bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record); 1747 fcf_rec->switch_name[6] = 1748 bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record); 1749 fcf_rec->switch_name[7] = 1750 bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record); 1751 } 1752 1753 /** 1754 * __lpfc_update_fcf_record - Update driver fcf record 1755 * @phba: pointer to lpfc hba data structure. 1756 * @fcf_rec: pointer to driver fcf record. 1757 * @new_fcf_record: pointer to hba fcf record. 1758 * @addr_mode: address mode to be set to the driver fcf record. 1759 * @vlan_id: vlan tag to be set to the driver fcf record. 1760 * @flag: flag bits to be set to the driver fcf record. 1761 * 1762 * This routine updates the driver FCF record from the new HBA FCF record 1763 * together with the address mode, vlan_id, and other informations. This 1764 * routine is called with the hbalock held. 1765 **/ 1766 static void 1767 __lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec, 1768 struct fcf_record *new_fcf_record, uint32_t addr_mode, 1769 uint16_t vlan_id, uint32_t flag) 1770 { 1771 lockdep_assert_held(&phba->hbalock); 1772 1773 /* Copy the fields from the HBA's FCF record */ 1774 lpfc_copy_fcf_record(fcf_rec, new_fcf_record); 1775 /* Update other fields of driver FCF record */ 1776 fcf_rec->addr_mode = addr_mode; 1777 fcf_rec->vlan_id = vlan_id; 1778 fcf_rec->flag |= (flag | RECORD_VALID); 1779 __lpfc_update_fcf_record_pri(phba, 1780 bf_get(lpfc_fcf_record_fcf_index, new_fcf_record), 1781 new_fcf_record); 1782 } 1783 1784 /** 1785 * lpfc_register_fcf - Register the FCF with hba. 1786 * @phba: pointer to lpfc hba data structure. 1787 * 1788 * This routine issues a register fcfi mailbox command to register 1789 * the fcf with HBA. 1790 **/ 1791 static void 1792 lpfc_register_fcf(struct lpfc_hba *phba) 1793 { 1794 LPFC_MBOXQ_t *fcf_mbxq; 1795 int rc; 1796 1797 spin_lock_irq(&phba->hbalock); 1798 /* If the FCF is not available do nothing. */ 1799 if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) { 1800 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG); 1801 spin_unlock_irq(&phba->hbalock); 1802 return; 1803 } 1804 1805 /* The FCF is already registered, start discovery */ 1806 if (phba->fcf.fcf_flag & FCF_REGISTERED) { 1807 phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE); 1808 phba->hba_flag &= ~FCF_TS_INPROG; 1809 if (phba->pport->port_state != LPFC_FLOGI && 1810 phba->pport->fc_flag & FC_FABRIC) { 1811 phba->hba_flag |= FCF_RR_INPROG; 1812 spin_unlock_irq(&phba->hbalock); 1813 lpfc_initial_flogi(phba->pport); 1814 return; 1815 } 1816 spin_unlock_irq(&phba->hbalock); 1817 return; 1818 } 1819 spin_unlock_irq(&phba->hbalock); 1820 1821 fcf_mbxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1822 if (!fcf_mbxq) { 1823 spin_lock_irq(&phba->hbalock); 1824 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG); 1825 spin_unlock_irq(&phba->hbalock); 1826 return; 1827 } 1828 1829 lpfc_reg_fcfi(phba, fcf_mbxq); 1830 fcf_mbxq->vport = phba->pport; 1831 fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi; 1832 rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT); 1833 if (rc == MBX_NOT_FINISHED) { 1834 spin_lock_irq(&phba->hbalock); 1835 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG); 1836 spin_unlock_irq(&phba->hbalock); 1837 mempool_free(fcf_mbxq, phba->mbox_mem_pool); 1838 } 1839 1840 return; 1841 } 1842 1843 /** 1844 * lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery. 1845 * @phba: pointer to lpfc hba data structure. 1846 * @new_fcf_record: pointer to fcf record. 1847 * @boot_flag: Indicates if this record used by boot bios. 1848 * @addr_mode: The address mode to be used by this FCF 1849 * @vlan_id: The vlan id to be used as vlan tagging by this FCF. 1850 * 1851 * This routine compare the fcf record with connect list obtained from the 1852 * config region to decide if this FCF can be used for SAN discovery. It returns 1853 * 1 if this record can be used for SAN discovery else return zero. If this FCF 1854 * record can be used for SAN discovery, the boot_flag will indicate if this FCF 1855 * is used by boot bios and addr_mode will indicate the addressing mode to be 1856 * used for this FCF when the function returns. 1857 * If the FCF record need to be used with a particular vlan id, the vlan is 1858 * set in the vlan_id on return of the function. If not VLAN tagging need to 1859 * be used with the FCF vlan_id will be set to LPFC_FCOE_NULL_VID; 1860 **/ 1861 static int 1862 lpfc_match_fcf_conn_list(struct lpfc_hba *phba, 1863 struct fcf_record *new_fcf_record, 1864 uint32_t *boot_flag, uint32_t *addr_mode, 1865 uint16_t *vlan_id) 1866 { 1867 struct lpfc_fcf_conn_entry *conn_entry; 1868 int i, j, fcf_vlan_id = 0; 1869 1870 /* Find the lowest VLAN id in the FCF record */ 1871 for (i = 0; i < 512; i++) { 1872 if (new_fcf_record->vlan_bitmap[i]) { 1873 fcf_vlan_id = i * 8; 1874 j = 0; 1875 while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) { 1876 j++; 1877 fcf_vlan_id++; 1878 } 1879 break; 1880 } 1881 } 1882 1883 /* FCF not valid/available or solicitation in progress */ 1884 if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) || 1885 !bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record) || 1886 bf_get(lpfc_fcf_record_fcf_sol, new_fcf_record)) 1887 return 0; 1888 1889 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) { 1890 *boot_flag = 0; 1891 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov, 1892 new_fcf_record); 1893 if (phba->valid_vlan) 1894 *vlan_id = phba->vlan_id; 1895 else 1896 *vlan_id = LPFC_FCOE_NULL_VID; 1897 return 1; 1898 } 1899 1900 /* 1901 * If there are no FCF connection table entry, driver connect to all 1902 * FCFs. 1903 */ 1904 if (list_empty(&phba->fcf_conn_rec_list)) { 1905 *boot_flag = 0; 1906 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov, 1907 new_fcf_record); 1908 1909 /* 1910 * When there are no FCF connect entries, use driver's default 1911 * addressing mode - FPMA. 1912 */ 1913 if (*addr_mode & LPFC_FCF_FPMA) 1914 *addr_mode = LPFC_FCF_FPMA; 1915 1916 /* If FCF record report a vlan id use that vlan id */ 1917 if (fcf_vlan_id) 1918 *vlan_id = fcf_vlan_id; 1919 else 1920 *vlan_id = LPFC_FCOE_NULL_VID; 1921 return 1; 1922 } 1923 1924 list_for_each_entry(conn_entry, 1925 &phba->fcf_conn_rec_list, list) { 1926 if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID)) 1927 continue; 1928 1929 if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) && 1930 !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name, 1931 new_fcf_record)) 1932 continue; 1933 if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) && 1934 !lpfc_sw_name_match(conn_entry->conn_rec.switch_name, 1935 new_fcf_record)) 1936 continue; 1937 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) { 1938 /* 1939 * If the vlan bit map does not have the bit set for the 1940 * vlan id to be used, then it is not a match. 1941 */ 1942 if (!(new_fcf_record->vlan_bitmap 1943 [conn_entry->conn_rec.vlan_tag / 8] & 1944 (1 << (conn_entry->conn_rec.vlan_tag % 8)))) 1945 continue; 1946 } 1947 1948 /* 1949 * If connection record does not support any addressing mode, 1950 * skip the FCF record. 1951 */ 1952 if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record) 1953 & (LPFC_FCF_FPMA | LPFC_FCF_SPMA))) 1954 continue; 1955 1956 /* 1957 * Check if the connection record specifies a required 1958 * addressing mode. 1959 */ 1960 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 1961 !(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) { 1962 1963 /* 1964 * If SPMA required but FCF not support this continue. 1965 */ 1966 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 1967 !(bf_get(lpfc_fcf_record_mac_addr_prov, 1968 new_fcf_record) & LPFC_FCF_SPMA)) 1969 continue; 1970 1971 /* 1972 * If FPMA required but FCF not support this continue. 1973 */ 1974 if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 1975 !(bf_get(lpfc_fcf_record_mac_addr_prov, 1976 new_fcf_record) & LPFC_FCF_FPMA)) 1977 continue; 1978 } 1979 1980 /* 1981 * This fcf record matches filtering criteria. 1982 */ 1983 if (conn_entry->conn_rec.flags & FCFCNCT_BOOT) 1984 *boot_flag = 1; 1985 else 1986 *boot_flag = 0; 1987 1988 /* 1989 * If user did not specify any addressing mode, or if the 1990 * preferred addressing mode specified by user is not supported 1991 * by FCF, allow fabric to pick the addressing mode. 1992 */ 1993 *addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov, 1994 new_fcf_record); 1995 /* 1996 * If the user specified a required address mode, assign that 1997 * address mode 1998 */ 1999 if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 2000 (!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED))) 2001 *addr_mode = (conn_entry->conn_rec.flags & 2002 FCFCNCT_AM_SPMA) ? 2003 LPFC_FCF_SPMA : LPFC_FCF_FPMA; 2004 /* 2005 * If the user specified a preferred address mode, use the 2006 * addr mode only if FCF support the addr_mode. 2007 */ 2008 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 2009 (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) && 2010 (conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 2011 (*addr_mode & LPFC_FCF_SPMA)) 2012 *addr_mode = LPFC_FCF_SPMA; 2013 else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) && 2014 (conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) && 2015 !(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) && 2016 (*addr_mode & LPFC_FCF_FPMA)) 2017 *addr_mode = LPFC_FCF_FPMA; 2018 2019 /* If matching connect list has a vlan id, use it */ 2020 if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) 2021 *vlan_id = conn_entry->conn_rec.vlan_tag; 2022 /* 2023 * If no vlan id is specified in connect list, use the vlan id 2024 * in the FCF record 2025 */ 2026 else if (fcf_vlan_id) 2027 *vlan_id = fcf_vlan_id; 2028 else 2029 *vlan_id = LPFC_FCOE_NULL_VID; 2030 2031 return 1; 2032 } 2033 2034 return 0; 2035 } 2036 2037 /** 2038 * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event. 2039 * @phba: pointer to lpfc hba data structure. 2040 * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned. 2041 * 2042 * This function check if there is any fcoe event pending while driver 2043 * scan FCF entries. If there is any pending event, it will restart the 2044 * FCF saning and return 1 else return 0. 2045 */ 2046 int 2047 lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf) 2048 { 2049 /* 2050 * If the Link is up and no FCoE events while in the 2051 * FCF discovery, no need to restart FCF discovery. 2052 */ 2053 if ((phba->link_state >= LPFC_LINK_UP) && 2054 (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan)) 2055 return 0; 2056 2057 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2058 "2768 Pending link or FCF event during current " 2059 "handling of the previous event: link_state:x%x, " 2060 "evt_tag_at_scan:x%x, evt_tag_current:x%x\n", 2061 phba->link_state, phba->fcoe_eventtag_at_fcf_scan, 2062 phba->fcoe_eventtag); 2063 2064 spin_lock_irq(&phba->hbalock); 2065 phba->fcf.fcf_flag &= ~FCF_AVAILABLE; 2066 spin_unlock_irq(&phba->hbalock); 2067 2068 if (phba->link_state >= LPFC_LINK_UP) { 2069 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, 2070 "2780 Restart FCF table scan due to " 2071 "pending FCF event:evt_tag_at_scan:x%x, " 2072 "evt_tag_current:x%x\n", 2073 phba->fcoe_eventtag_at_fcf_scan, 2074 phba->fcoe_eventtag); 2075 lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST); 2076 } else { 2077 /* 2078 * Do not continue FCF discovery and clear FCF_TS_INPROG 2079 * flag 2080 */ 2081 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, 2082 "2833 Stop FCF discovery process due to link " 2083 "state change (x%x)\n", phba->link_state); 2084 spin_lock_irq(&phba->hbalock); 2085 phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG); 2086 phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY); 2087 spin_unlock_irq(&phba->hbalock); 2088 } 2089 2090 /* Unregister the currently registered FCF if required */ 2091 if (unreg_fcf) { 2092 spin_lock_irq(&phba->hbalock); 2093 phba->fcf.fcf_flag &= ~FCF_REGISTERED; 2094 spin_unlock_irq(&phba->hbalock); 2095 lpfc_sli4_unregister_fcf(phba); 2096 } 2097 return 1; 2098 } 2099 2100 /** 2101 * lpfc_sli4_new_fcf_random_select - Randomly select an eligible new fcf record 2102 * @phba: pointer to lpfc hba data structure. 2103 * @fcf_cnt: number of eligible fcf record seen so far. 2104 * 2105 * This function makes an running random selection decision on FCF record to 2106 * use through a sequence of @fcf_cnt eligible FCF records with equal 2107 * probability. To perform integer manunipulation of random numbers with 2108 * size unit32_t, the lower 16 bits of the 32-bit random number returned 2109 * from prandom_u32() are taken as the random random number generated. 2110 * 2111 * Returns true when outcome is for the newly read FCF record should be 2112 * chosen; otherwise, return false when outcome is for keeping the previously 2113 * chosen FCF record. 2114 **/ 2115 static bool 2116 lpfc_sli4_new_fcf_random_select(struct lpfc_hba *phba, uint32_t fcf_cnt) 2117 { 2118 uint32_t rand_num; 2119 2120 /* Get 16-bit uniform random number */ 2121 rand_num = 0xFFFF & prandom_u32(); 2122 2123 /* Decision with probability 1/fcf_cnt */ 2124 if ((fcf_cnt * rand_num) < 0xFFFF) 2125 return true; 2126 else 2127 return false; 2128 } 2129 2130 /** 2131 * lpfc_sli4_fcf_rec_mbox_parse - Parse read_fcf mbox command. 2132 * @phba: pointer to lpfc hba data structure. 2133 * @mboxq: pointer to mailbox object. 2134 * @next_fcf_index: pointer to holder of next fcf index. 2135 * 2136 * This routine parses the non-embedded fcf mailbox command by performing the 2137 * necessarily error checking, non-embedded read FCF record mailbox command 2138 * SGE parsing, and endianness swapping. 2139 * 2140 * Returns the pointer to the new FCF record in the non-embedded mailbox 2141 * command DMA memory if successfully, other NULL. 2142 */ 2143 static struct fcf_record * 2144 lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq, 2145 uint16_t *next_fcf_index) 2146 { 2147 void *virt_addr; 2148 struct lpfc_mbx_sge sge; 2149 struct lpfc_mbx_read_fcf_tbl *read_fcf; 2150 uint32_t shdr_status, shdr_add_status, if_type; 2151 union lpfc_sli4_cfg_shdr *shdr; 2152 struct fcf_record *new_fcf_record; 2153 2154 /* Get the first SGE entry from the non-embedded DMA memory. This 2155 * routine only uses a single SGE. 2156 */ 2157 lpfc_sli4_mbx_sge_get(mboxq, 0, &sge); 2158 if (unlikely(!mboxq->sge_array)) { 2159 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2160 "2524 Failed to get the non-embedded SGE " 2161 "virtual address\n"); 2162 return NULL; 2163 } 2164 virt_addr = mboxq->sge_array->addr[0]; 2165 2166 shdr = (union lpfc_sli4_cfg_shdr *)virt_addr; 2167 lpfc_sli_pcimem_bcopy(shdr, shdr, 2168 sizeof(union lpfc_sli4_cfg_shdr)); 2169 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); 2170 if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf); 2171 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); 2172 if (shdr_status || shdr_add_status) { 2173 if (shdr_status == STATUS_FCF_TABLE_EMPTY || 2174 if_type == LPFC_SLI_INTF_IF_TYPE_2) 2175 lpfc_printf_log(phba, KERN_ERR, 2176 LOG_TRACE_EVENT, 2177 "2726 READ_FCF_RECORD Indicates empty " 2178 "FCF table.\n"); 2179 else 2180 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2181 "2521 READ_FCF_RECORD mailbox failed " 2182 "with status x%x add_status x%x, " 2183 "mbx\n", shdr_status, shdr_add_status); 2184 return NULL; 2185 } 2186 2187 /* Interpreting the returned information of the FCF record */ 2188 read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr; 2189 lpfc_sli_pcimem_bcopy(read_fcf, read_fcf, 2190 sizeof(struct lpfc_mbx_read_fcf_tbl)); 2191 *next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf); 2192 new_fcf_record = (struct fcf_record *)(virt_addr + 2193 sizeof(struct lpfc_mbx_read_fcf_tbl)); 2194 lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record, 2195 offsetof(struct fcf_record, vlan_bitmap)); 2196 new_fcf_record->word137 = le32_to_cpu(new_fcf_record->word137); 2197 new_fcf_record->word138 = le32_to_cpu(new_fcf_record->word138); 2198 2199 return new_fcf_record; 2200 } 2201 2202 /** 2203 * lpfc_sli4_log_fcf_record_info - Log the information of a fcf record 2204 * @phba: pointer to lpfc hba data structure. 2205 * @fcf_record: pointer to the fcf record. 2206 * @vlan_id: the lowest vlan identifier associated to this fcf record. 2207 * @next_fcf_index: the index to the next fcf record in hba's fcf table. 2208 * 2209 * This routine logs the detailed FCF record if the LOG_FIP loggin is 2210 * enabled. 2211 **/ 2212 static void 2213 lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba, 2214 struct fcf_record *fcf_record, 2215 uint16_t vlan_id, 2216 uint16_t next_fcf_index) 2217 { 2218 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2219 "2764 READ_FCF_RECORD:\n" 2220 "\tFCF_Index : x%x\n" 2221 "\tFCF_Avail : x%x\n" 2222 "\tFCF_Valid : x%x\n" 2223 "\tFCF_SOL : x%x\n" 2224 "\tFIP_Priority : x%x\n" 2225 "\tMAC_Provider : x%x\n" 2226 "\tLowest VLANID : x%x\n" 2227 "\tFCF_MAC Addr : x%x:%x:%x:%x:%x:%x\n" 2228 "\tFabric_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n" 2229 "\tSwitch_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n" 2230 "\tNext_FCF_Index: x%x\n", 2231 bf_get(lpfc_fcf_record_fcf_index, fcf_record), 2232 bf_get(lpfc_fcf_record_fcf_avail, fcf_record), 2233 bf_get(lpfc_fcf_record_fcf_valid, fcf_record), 2234 bf_get(lpfc_fcf_record_fcf_sol, fcf_record), 2235 fcf_record->fip_priority, 2236 bf_get(lpfc_fcf_record_mac_addr_prov, fcf_record), 2237 vlan_id, 2238 bf_get(lpfc_fcf_record_mac_0, fcf_record), 2239 bf_get(lpfc_fcf_record_mac_1, fcf_record), 2240 bf_get(lpfc_fcf_record_mac_2, fcf_record), 2241 bf_get(lpfc_fcf_record_mac_3, fcf_record), 2242 bf_get(lpfc_fcf_record_mac_4, fcf_record), 2243 bf_get(lpfc_fcf_record_mac_5, fcf_record), 2244 bf_get(lpfc_fcf_record_fab_name_0, fcf_record), 2245 bf_get(lpfc_fcf_record_fab_name_1, fcf_record), 2246 bf_get(lpfc_fcf_record_fab_name_2, fcf_record), 2247 bf_get(lpfc_fcf_record_fab_name_3, fcf_record), 2248 bf_get(lpfc_fcf_record_fab_name_4, fcf_record), 2249 bf_get(lpfc_fcf_record_fab_name_5, fcf_record), 2250 bf_get(lpfc_fcf_record_fab_name_6, fcf_record), 2251 bf_get(lpfc_fcf_record_fab_name_7, fcf_record), 2252 bf_get(lpfc_fcf_record_switch_name_0, fcf_record), 2253 bf_get(lpfc_fcf_record_switch_name_1, fcf_record), 2254 bf_get(lpfc_fcf_record_switch_name_2, fcf_record), 2255 bf_get(lpfc_fcf_record_switch_name_3, fcf_record), 2256 bf_get(lpfc_fcf_record_switch_name_4, fcf_record), 2257 bf_get(lpfc_fcf_record_switch_name_5, fcf_record), 2258 bf_get(lpfc_fcf_record_switch_name_6, fcf_record), 2259 bf_get(lpfc_fcf_record_switch_name_7, fcf_record), 2260 next_fcf_index); 2261 } 2262 2263 /** 2264 * lpfc_sli4_fcf_record_match - testing new FCF record for matching existing FCF 2265 * @phba: pointer to lpfc hba data structure. 2266 * @fcf_rec: pointer to an existing FCF record. 2267 * @new_fcf_record: pointer to a new FCF record. 2268 * @new_vlan_id: vlan id from the new FCF record. 2269 * 2270 * This function performs matching test of a new FCF record against an existing 2271 * FCF record. If the new_vlan_id passed in is LPFC_FCOE_IGNORE_VID, vlan id 2272 * will not be used as part of the FCF record matching criteria. 2273 * 2274 * Returns true if all the fields matching, otherwise returns false. 2275 */ 2276 static bool 2277 lpfc_sli4_fcf_record_match(struct lpfc_hba *phba, 2278 struct lpfc_fcf_rec *fcf_rec, 2279 struct fcf_record *new_fcf_record, 2280 uint16_t new_vlan_id) 2281 { 2282 if (new_vlan_id != LPFC_FCOE_IGNORE_VID) 2283 if (!lpfc_vlan_id_match(fcf_rec->vlan_id, new_vlan_id)) 2284 return false; 2285 if (!lpfc_mac_addr_match(fcf_rec->mac_addr, new_fcf_record)) 2286 return false; 2287 if (!lpfc_sw_name_match(fcf_rec->switch_name, new_fcf_record)) 2288 return false; 2289 if (!lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record)) 2290 return false; 2291 if (fcf_rec->priority != new_fcf_record->fip_priority) 2292 return false; 2293 return true; 2294 } 2295 2296 /** 2297 * lpfc_sli4_fcf_rr_next_proc - processing next roundrobin fcf 2298 * @vport: Pointer to vport object. 2299 * @fcf_index: index to next fcf. 2300 * 2301 * This function processing the roundrobin fcf failover to next fcf index. 2302 * When this function is invoked, there will be a current fcf registered 2303 * for flogi. 2304 * Return: 0 for continue retrying flogi on currently registered fcf; 2305 * 1 for stop flogi on currently registered fcf; 2306 */ 2307 int lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport *vport, uint16_t fcf_index) 2308 { 2309 struct lpfc_hba *phba = vport->phba; 2310 int rc; 2311 2312 if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) { 2313 spin_lock_irq(&phba->hbalock); 2314 if (phba->hba_flag & HBA_DEVLOSS_TMO) { 2315 spin_unlock_irq(&phba->hbalock); 2316 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2317 "2872 Devloss tmo with no eligible " 2318 "FCF, unregister in-use FCF (x%x) " 2319 "and rescan FCF table\n", 2320 phba->fcf.current_rec.fcf_indx); 2321 lpfc_unregister_fcf_rescan(phba); 2322 goto stop_flogi_current_fcf; 2323 } 2324 /* Mark the end to FLOGI roundrobin failover */ 2325 phba->hba_flag &= ~FCF_RR_INPROG; 2326 /* Allow action to new fcf asynchronous event */ 2327 phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE); 2328 spin_unlock_irq(&phba->hbalock); 2329 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2330 "2865 No FCF available, stop roundrobin FCF " 2331 "failover and change port state:x%x/x%x\n", 2332 phba->pport->port_state, LPFC_VPORT_UNKNOWN); 2333 phba->pport->port_state = LPFC_VPORT_UNKNOWN; 2334 2335 if (!phba->fcf.fcf_redisc_attempted) { 2336 lpfc_unregister_fcf(phba); 2337 2338 rc = lpfc_sli4_redisc_fcf_table(phba); 2339 if (!rc) { 2340 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2341 "3195 Rediscover FCF table\n"); 2342 phba->fcf.fcf_redisc_attempted = 1; 2343 lpfc_sli4_clear_fcf_rr_bmask(phba); 2344 } else { 2345 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2346 "3196 Rediscover FCF table " 2347 "failed. Status:x%x\n", rc); 2348 } 2349 } else { 2350 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2351 "3197 Already rediscover FCF table " 2352 "attempted. No more retry\n"); 2353 } 2354 goto stop_flogi_current_fcf; 2355 } else { 2356 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_ELS, 2357 "2794 Try FLOGI roundrobin FCF failover to " 2358 "(x%x)\n", fcf_index); 2359 rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba, fcf_index); 2360 if (rc) 2361 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS, 2362 "2761 FLOGI roundrobin FCF failover " 2363 "failed (rc:x%x) to read FCF (x%x)\n", 2364 rc, phba->fcf.current_rec.fcf_indx); 2365 else 2366 goto stop_flogi_current_fcf; 2367 } 2368 return 0; 2369 2370 stop_flogi_current_fcf: 2371 lpfc_can_disctmo(vport); 2372 return 1; 2373 } 2374 2375 /** 2376 * lpfc_sli4_fcf_pri_list_del 2377 * @phba: pointer to lpfc hba data structure. 2378 * @fcf_index: the index of the fcf record to delete 2379 * This routine checks the on list flag of the fcf_index to be deleted. 2380 * If it is one the list then it is removed from the list, and the flag 2381 * is cleared. This routine grab the hbalock before removing the fcf 2382 * record from the list. 2383 **/ 2384 static void lpfc_sli4_fcf_pri_list_del(struct lpfc_hba *phba, 2385 uint16_t fcf_index) 2386 { 2387 struct lpfc_fcf_pri *new_fcf_pri; 2388 2389 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 2390 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2391 "3058 deleting idx x%x pri x%x flg x%x\n", 2392 fcf_index, new_fcf_pri->fcf_rec.priority, 2393 new_fcf_pri->fcf_rec.flag); 2394 spin_lock_irq(&phba->hbalock); 2395 if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) { 2396 if (phba->fcf.current_rec.priority == 2397 new_fcf_pri->fcf_rec.priority) 2398 phba->fcf.eligible_fcf_cnt--; 2399 list_del_init(&new_fcf_pri->list); 2400 new_fcf_pri->fcf_rec.flag &= ~LPFC_FCF_ON_PRI_LIST; 2401 } 2402 spin_unlock_irq(&phba->hbalock); 2403 } 2404 2405 /** 2406 * lpfc_sli4_set_fcf_flogi_fail 2407 * @phba: pointer to lpfc hba data structure. 2408 * @fcf_index: the index of the fcf record to update 2409 * This routine acquires the hbalock and then set the LPFC_FCF_FLOGI_FAILED 2410 * flag so the the round robin slection for the particular priority level 2411 * will try a different fcf record that does not have this bit set. 2412 * If the fcf record is re-read for any reason this flag is cleared brfore 2413 * adding it to the priority list. 2414 **/ 2415 void 2416 lpfc_sli4_set_fcf_flogi_fail(struct lpfc_hba *phba, uint16_t fcf_index) 2417 { 2418 struct lpfc_fcf_pri *new_fcf_pri; 2419 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 2420 spin_lock_irq(&phba->hbalock); 2421 new_fcf_pri->fcf_rec.flag |= LPFC_FCF_FLOGI_FAILED; 2422 spin_unlock_irq(&phba->hbalock); 2423 } 2424 2425 /** 2426 * lpfc_sli4_fcf_pri_list_add 2427 * @phba: pointer to lpfc hba data structure. 2428 * @fcf_index: the index of the fcf record to add 2429 * @new_fcf_record: pointer to a new FCF record. 2430 * This routine checks the priority of the fcf_index to be added. 2431 * If it is a lower priority than the current head of the fcf_pri list 2432 * then it is added to the list in the right order. 2433 * If it is the same priority as the current head of the list then it 2434 * is added to the head of the list and its bit in the rr_bmask is set. 2435 * If the fcf_index to be added is of a higher priority than the current 2436 * head of the list then the rr_bmask is cleared, its bit is set in the 2437 * rr_bmask and it is added to the head of the list. 2438 * returns: 2439 * 0=success 1=failure 2440 **/ 2441 static int lpfc_sli4_fcf_pri_list_add(struct lpfc_hba *phba, 2442 uint16_t fcf_index, 2443 struct fcf_record *new_fcf_record) 2444 { 2445 uint16_t current_fcf_pri; 2446 uint16_t last_index; 2447 struct lpfc_fcf_pri *fcf_pri; 2448 struct lpfc_fcf_pri *next_fcf_pri; 2449 struct lpfc_fcf_pri *new_fcf_pri; 2450 int ret; 2451 2452 new_fcf_pri = &phba->fcf.fcf_pri[fcf_index]; 2453 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2454 "3059 adding idx x%x pri x%x flg x%x\n", 2455 fcf_index, new_fcf_record->fip_priority, 2456 new_fcf_pri->fcf_rec.flag); 2457 spin_lock_irq(&phba->hbalock); 2458 if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) 2459 list_del_init(&new_fcf_pri->list); 2460 new_fcf_pri->fcf_rec.fcf_index = fcf_index; 2461 new_fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority; 2462 if (list_empty(&phba->fcf.fcf_pri_list)) { 2463 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list); 2464 ret = lpfc_sli4_fcf_rr_index_set(phba, 2465 new_fcf_pri->fcf_rec.fcf_index); 2466 goto out; 2467 } 2468 2469 last_index = find_first_bit(phba->fcf.fcf_rr_bmask, 2470 LPFC_SLI4_FCF_TBL_INDX_MAX); 2471 if (last_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) { 2472 ret = 0; /* Empty rr list */ 2473 goto out; 2474 } 2475 current_fcf_pri = phba->fcf.fcf_pri[last_index].fcf_rec.priority; 2476 if (new_fcf_pri->fcf_rec.priority <= current_fcf_pri) { 2477 list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list); 2478 if (new_fcf_pri->fcf_rec.priority < current_fcf_pri) { 2479 memset(phba->fcf.fcf_rr_bmask, 0, 2480 sizeof(*phba->fcf.fcf_rr_bmask)); 2481 /* fcfs_at_this_priority_level = 1; */ 2482 phba->fcf.eligible_fcf_cnt = 1; 2483 } else 2484 /* fcfs_at_this_priority_level++; */ 2485 phba->fcf.eligible_fcf_cnt++; 2486 ret = lpfc_sli4_fcf_rr_index_set(phba, 2487 new_fcf_pri->fcf_rec.fcf_index); 2488 goto out; 2489 } 2490 2491 list_for_each_entry_safe(fcf_pri, next_fcf_pri, 2492 &phba->fcf.fcf_pri_list, list) { 2493 if (new_fcf_pri->fcf_rec.priority <= 2494 fcf_pri->fcf_rec.priority) { 2495 if (fcf_pri->list.prev == &phba->fcf.fcf_pri_list) 2496 list_add(&new_fcf_pri->list, 2497 &phba->fcf.fcf_pri_list); 2498 else 2499 list_add(&new_fcf_pri->list, 2500 &((struct lpfc_fcf_pri *) 2501 fcf_pri->list.prev)->list); 2502 ret = 0; 2503 goto out; 2504 } else if (fcf_pri->list.next == &phba->fcf.fcf_pri_list 2505 || new_fcf_pri->fcf_rec.priority < 2506 next_fcf_pri->fcf_rec.priority) { 2507 list_add(&new_fcf_pri->list, &fcf_pri->list); 2508 ret = 0; 2509 goto out; 2510 } 2511 if (new_fcf_pri->fcf_rec.priority > fcf_pri->fcf_rec.priority) 2512 continue; 2513 2514 } 2515 ret = 1; 2516 out: 2517 /* we use = instead of |= to clear the FLOGI_FAILED flag. */ 2518 new_fcf_pri->fcf_rec.flag = LPFC_FCF_ON_PRI_LIST; 2519 spin_unlock_irq(&phba->hbalock); 2520 return ret; 2521 } 2522 2523 /** 2524 * lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler. 2525 * @phba: pointer to lpfc hba data structure. 2526 * @mboxq: pointer to mailbox object. 2527 * 2528 * This function iterates through all the fcf records available in 2529 * HBA and chooses the optimal FCF record for discovery. After finding 2530 * the FCF for discovery it registers the FCF record and kicks start 2531 * discovery. 2532 * If FCF_IN_USE flag is set in currently used FCF, the routine tries to 2533 * use an FCF record which matches fabric name and mac address of the 2534 * currently used FCF record. 2535 * If the driver supports only one FCF, it will try to use the FCF record 2536 * used by BOOT_BIOS. 2537 */ 2538 void 2539 lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 2540 { 2541 struct fcf_record *new_fcf_record; 2542 uint32_t boot_flag, addr_mode; 2543 uint16_t fcf_index, next_fcf_index; 2544 struct lpfc_fcf_rec *fcf_rec = NULL; 2545 uint16_t vlan_id = LPFC_FCOE_NULL_VID; 2546 bool select_new_fcf; 2547 int rc; 2548 2549 /* If there is pending FCoE event restart FCF table scan */ 2550 if (lpfc_check_pending_fcoe_event(phba, LPFC_SKIP_UNREG_FCF)) { 2551 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2552 return; 2553 } 2554 2555 /* Parse the FCF record from the non-embedded mailbox command */ 2556 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, 2557 &next_fcf_index); 2558 if (!new_fcf_record) { 2559 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2560 "2765 Mailbox command READ_FCF_RECORD " 2561 "failed to retrieve a FCF record.\n"); 2562 /* Let next new FCF event trigger fast failover */ 2563 spin_lock_irq(&phba->hbalock); 2564 phba->hba_flag &= ~FCF_TS_INPROG; 2565 spin_unlock_irq(&phba->hbalock); 2566 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2567 return; 2568 } 2569 2570 /* Check the FCF record against the connection list */ 2571 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, 2572 &addr_mode, &vlan_id); 2573 2574 /* Log the FCF record information if turned on */ 2575 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, 2576 next_fcf_index); 2577 2578 /* 2579 * If the fcf record does not match with connect list entries 2580 * read the next entry; otherwise, this is an eligible FCF 2581 * record for roundrobin FCF failover. 2582 */ 2583 if (!rc) { 2584 lpfc_sli4_fcf_pri_list_del(phba, 2585 bf_get(lpfc_fcf_record_fcf_index, 2586 new_fcf_record)); 2587 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2588 "2781 FCF (x%x) failed connection " 2589 "list check: (x%x/x%x/%x)\n", 2590 bf_get(lpfc_fcf_record_fcf_index, 2591 new_fcf_record), 2592 bf_get(lpfc_fcf_record_fcf_avail, 2593 new_fcf_record), 2594 bf_get(lpfc_fcf_record_fcf_valid, 2595 new_fcf_record), 2596 bf_get(lpfc_fcf_record_fcf_sol, 2597 new_fcf_record)); 2598 if ((phba->fcf.fcf_flag & FCF_IN_USE) && 2599 lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec, 2600 new_fcf_record, LPFC_FCOE_IGNORE_VID)) { 2601 if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) != 2602 phba->fcf.current_rec.fcf_indx) { 2603 lpfc_printf_log(phba, KERN_ERR, 2604 LOG_TRACE_EVENT, 2605 "2862 FCF (x%x) matches property " 2606 "of in-use FCF (x%x)\n", 2607 bf_get(lpfc_fcf_record_fcf_index, 2608 new_fcf_record), 2609 phba->fcf.current_rec.fcf_indx); 2610 goto read_next_fcf; 2611 } 2612 /* 2613 * In case the current in-use FCF record becomes 2614 * invalid/unavailable during FCF discovery that 2615 * was not triggered by fast FCF failover process, 2616 * treat it as fast FCF failover. 2617 */ 2618 if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND) && 2619 !(phba->fcf.fcf_flag & FCF_REDISC_FOV)) { 2620 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2621 "2835 Invalid in-use FCF " 2622 "(x%x), enter FCF failover " 2623 "table scan.\n", 2624 phba->fcf.current_rec.fcf_indx); 2625 spin_lock_irq(&phba->hbalock); 2626 phba->fcf.fcf_flag |= FCF_REDISC_FOV; 2627 spin_unlock_irq(&phba->hbalock); 2628 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2629 lpfc_sli4_fcf_scan_read_fcf_rec(phba, 2630 LPFC_FCOE_FCF_GET_FIRST); 2631 return; 2632 } 2633 } 2634 goto read_next_fcf; 2635 } else { 2636 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 2637 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, 2638 new_fcf_record); 2639 if (rc) 2640 goto read_next_fcf; 2641 } 2642 2643 /* 2644 * If this is not the first FCF discovery of the HBA, use last 2645 * FCF record for the discovery. The condition that a rescan 2646 * matches the in-use FCF record: fabric name, switch name, mac 2647 * address, and vlan_id. 2648 */ 2649 spin_lock_irq(&phba->hbalock); 2650 if (phba->fcf.fcf_flag & FCF_IN_USE) { 2651 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV && 2652 lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec, 2653 new_fcf_record, vlan_id)) { 2654 if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) == 2655 phba->fcf.current_rec.fcf_indx) { 2656 phba->fcf.fcf_flag |= FCF_AVAILABLE; 2657 if (phba->fcf.fcf_flag & FCF_REDISC_PEND) 2658 /* Stop FCF redisc wait timer */ 2659 __lpfc_sli4_stop_fcf_redisc_wait_timer( 2660 phba); 2661 else if (phba->fcf.fcf_flag & FCF_REDISC_FOV) 2662 /* Fast failover, mark completed */ 2663 phba->fcf.fcf_flag &= ~FCF_REDISC_FOV; 2664 spin_unlock_irq(&phba->hbalock); 2665 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2666 "2836 New FCF matches in-use " 2667 "FCF (x%x), port_state:x%x, " 2668 "fc_flag:x%x\n", 2669 phba->fcf.current_rec.fcf_indx, 2670 phba->pport->port_state, 2671 phba->pport->fc_flag); 2672 goto out; 2673 } else 2674 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2675 "2863 New FCF (x%x) matches " 2676 "property of in-use FCF (x%x)\n", 2677 bf_get(lpfc_fcf_record_fcf_index, 2678 new_fcf_record), 2679 phba->fcf.current_rec.fcf_indx); 2680 } 2681 /* 2682 * Read next FCF record from HBA searching for the matching 2683 * with in-use record only if not during the fast failover 2684 * period. In case of fast failover period, it shall try to 2685 * determine whether the FCF record just read should be the 2686 * next candidate. 2687 */ 2688 if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) { 2689 spin_unlock_irq(&phba->hbalock); 2690 goto read_next_fcf; 2691 } 2692 } 2693 /* 2694 * Update on failover FCF record only if it's in FCF fast-failover 2695 * period; otherwise, update on current FCF record. 2696 */ 2697 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) 2698 fcf_rec = &phba->fcf.failover_rec; 2699 else 2700 fcf_rec = &phba->fcf.current_rec; 2701 2702 if (phba->fcf.fcf_flag & FCF_AVAILABLE) { 2703 /* 2704 * If the driver FCF record does not have boot flag 2705 * set and new hba fcf record has boot flag set, use 2706 * the new hba fcf record. 2707 */ 2708 if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) { 2709 /* Choose this FCF record */ 2710 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2711 "2837 Update current FCF record " 2712 "(x%x) with new FCF record (x%x)\n", 2713 fcf_rec->fcf_indx, 2714 bf_get(lpfc_fcf_record_fcf_index, 2715 new_fcf_record)); 2716 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, 2717 addr_mode, vlan_id, BOOT_ENABLE); 2718 spin_unlock_irq(&phba->hbalock); 2719 goto read_next_fcf; 2720 } 2721 /* 2722 * If the driver FCF record has boot flag set and the 2723 * new hba FCF record does not have boot flag, read 2724 * the next FCF record. 2725 */ 2726 if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) { 2727 spin_unlock_irq(&phba->hbalock); 2728 goto read_next_fcf; 2729 } 2730 /* 2731 * If the new hba FCF record has lower priority value 2732 * than the driver FCF record, use the new record. 2733 */ 2734 if (new_fcf_record->fip_priority < fcf_rec->priority) { 2735 /* Choose the new FCF record with lower priority */ 2736 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2737 "2838 Update current FCF record " 2738 "(x%x) with new FCF record (x%x)\n", 2739 fcf_rec->fcf_indx, 2740 bf_get(lpfc_fcf_record_fcf_index, 2741 new_fcf_record)); 2742 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, 2743 addr_mode, vlan_id, 0); 2744 /* Reset running random FCF selection count */ 2745 phba->fcf.eligible_fcf_cnt = 1; 2746 } else if (new_fcf_record->fip_priority == fcf_rec->priority) { 2747 /* Update running random FCF selection count */ 2748 phba->fcf.eligible_fcf_cnt++; 2749 select_new_fcf = lpfc_sli4_new_fcf_random_select(phba, 2750 phba->fcf.eligible_fcf_cnt); 2751 if (select_new_fcf) { 2752 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2753 "2839 Update current FCF record " 2754 "(x%x) with new FCF record (x%x)\n", 2755 fcf_rec->fcf_indx, 2756 bf_get(lpfc_fcf_record_fcf_index, 2757 new_fcf_record)); 2758 /* Choose the new FCF by random selection */ 2759 __lpfc_update_fcf_record(phba, fcf_rec, 2760 new_fcf_record, 2761 addr_mode, vlan_id, 0); 2762 } 2763 } 2764 spin_unlock_irq(&phba->hbalock); 2765 goto read_next_fcf; 2766 } 2767 /* 2768 * This is the first suitable FCF record, choose this record for 2769 * initial best-fit FCF. 2770 */ 2771 if (fcf_rec) { 2772 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2773 "2840 Update initial FCF candidate " 2774 "with FCF (x%x)\n", 2775 bf_get(lpfc_fcf_record_fcf_index, 2776 new_fcf_record)); 2777 __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, 2778 addr_mode, vlan_id, (boot_flag ? 2779 BOOT_ENABLE : 0)); 2780 phba->fcf.fcf_flag |= FCF_AVAILABLE; 2781 /* Setup initial running random FCF selection count */ 2782 phba->fcf.eligible_fcf_cnt = 1; 2783 } 2784 spin_unlock_irq(&phba->hbalock); 2785 goto read_next_fcf; 2786 2787 read_next_fcf: 2788 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2789 if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) { 2790 if (phba->fcf.fcf_flag & FCF_REDISC_FOV) { 2791 /* 2792 * Case of FCF fast failover scan 2793 */ 2794 2795 /* 2796 * It has not found any suitable FCF record, cancel 2797 * FCF scan inprogress, and do nothing 2798 */ 2799 if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) { 2800 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2801 "2782 No suitable FCF found: " 2802 "(x%x/x%x)\n", 2803 phba->fcoe_eventtag_at_fcf_scan, 2804 bf_get(lpfc_fcf_record_fcf_index, 2805 new_fcf_record)); 2806 spin_lock_irq(&phba->hbalock); 2807 if (phba->hba_flag & HBA_DEVLOSS_TMO) { 2808 phba->hba_flag &= ~FCF_TS_INPROG; 2809 spin_unlock_irq(&phba->hbalock); 2810 /* Unregister in-use FCF and rescan */ 2811 lpfc_printf_log(phba, KERN_INFO, 2812 LOG_FIP, 2813 "2864 On devloss tmo " 2814 "unreg in-use FCF and " 2815 "rescan FCF table\n"); 2816 lpfc_unregister_fcf_rescan(phba); 2817 return; 2818 } 2819 /* 2820 * Let next new FCF event trigger fast failover 2821 */ 2822 phba->hba_flag &= ~FCF_TS_INPROG; 2823 spin_unlock_irq(&phba->hbalock); 2824 return; 2825 } 2826 /* 2827 * It has found a suitable FCF record that is not 2828 * the same as in-use FCF record, unregister the 2829 * in-use FCF record, replace the in-use FCF record 2830 * with the new FCF record, mark FCF fast failover 2831 * completed, and then start register the new FCF 2832 * record. 2833 */ 2834 2835 /* Unregister the current in-use FCF record */ 2836 lpfc_unregister_fcf(phba); 2837 2838 /* Replace in-use record with the new record */ 2839 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2840 "2842 Replace in-use FCF (x%x) " 2841 "with failover FCF (x%x)\n", 2842 phba->fcf.current_rec.fcf_indx, 2843 phba->fcf.failover_rec.fcf_indx); 2844 memcpy(&phba->fcf.current_rec, 2845 &phba->fcf.failover_rec, 2846 sizeof(struct lpfc_fcf_rec)); 2847 /* 2848 * Mark the fast FCF failover rediscovery completed 2849 * and the start of the first round of the roundrobin 2850 * FCF failover. 2851 */ 2852 spin_lock_irq(&phba->hbalock); 2853 phba->fcf.fcf_flag &= ~FCF_REDISC_FOV; 2854 spin_unlock_irq(&phba->hbalock); 2855 /* Register to the new FCF record */ 2856 lpfc_register_fcf(phba); 2857 } else { 2858 /* 2859 * In case of transaction period to fast FCF failover, 2860 * do nothing when search to the end of the FCF table. 2861 */ 2862 if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) || 2863 (phba->fcf.fcf_flag & FCF_REDISC_PEND)) 2864 return; 2865 2866 if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV && 2867 phba->fcf.fcf_flag & FCF_IN_USE) { 2868 /* 2869 * In case the current in-use FCF record no 2870 * longer existed during FCF discovery that 2871 * was not triggered by fast FCF failover 2872 * process, treat it as fast FCF failover. 2873 */ 2874 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2875 "2841 In-use FCF record (x%x) " 2876 "not reported, entering fast " 2877 "FCF failover mode scanning.\n", 2878 phba->fcf.current_rec.fcf_indx); 2879 spin_lock_irq(&phba->hbalock); 2880 phba->fcf.fcf_flag |= FCF_REDISC_FOV; 2881 spin_unlock_irq(&phba->hbalock); 2882 lpfc_sli4_fcf_scan_read_fcf_rec(phba, 2883 LPFC_FCOE_FCF_GET_FIRST); 2884 return; 2885 } 2886 /* Register to the new FCF record */ 2887 lpfc_register_fcf(phba); 2888 } 2889 } else 2890 lpfc_sli4_fcf_scan_read_fcf_rec(phba, next_fcf_index); 2891 return; 2892 2893 out: 2894 lpfc_sli4_mbox_cmd_free(phba, mboxq); 2895 lpfc_register_fcf(phba); 2896 2897 return; 2898 } 2899 2900 /** 2901 * lpfc_mbx_cmpl_fcf_rr_read_fcf_rec - fcf roundrobin read_fcf mbox cmpl hdler 2902 * @phba: pointer to lpfc hba data structure. 2903 * @mboxq: pointer to mailbox object. 2904 * 2905 * This is the callback function for FLOGI failure roundrobin FCF failover 2906 * read FCF record mailbox command from the eligible FCF record bmask for 2907 * performing the failover. If the FCF read back is not valid/available, it 2908 * fails through to retrying FLOGI to the currently registered FCF again. 2909 * Otherwise, if the FCF read back is valid and available, it will set the 2910 * newly read FCF record to the failover FCF record, unregister currently 2911 * registered FCF record, copy the failover FCF record to the current 2912 * FCF record, and then register the current FCF record before proceeding 2913 * to trying FLOGI on the new failover FCF. 2914 */ 2915 void 2916 lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 2917 { 2918 struct fcf_record *new_fcf_record; 2919 uint32_t boot_flag, addr_mode; 2920 uint16_t next_fcf_index, fcf_index; 2921 uint16_t current_fcf_index; 2922 uint16_t vlan_id; 2923 int rc; 2924 2925 /* If link state is not up, stop the roundrobin failover process */ 2926 if (phba->link_state < LPFC_LINK_UP) { 2927 spin_lock_irq(&phba->hbalock); 2928 phba->fcf.fcf_flag &= ~FCF_DISCOVERY; 2929 phba->hba_flag &= ~FCF_RR_INPROG; 2930 spin_unlock_irq(&phba->hbalock); 2931 goto out; 2932 } 2933 2934 /* Parse the FCF record from the non-embedded mailbox command */ 2935 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, 2936 &next_fcf_index); 2937 if (!new_fcf_record) { 2938 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, 2939 "2766 Mailbox command READ_FCF_RECORD " 2940 "failed to retrieve a FCF record. " 2941 "hba_flg x%x fcf_flg x%x\n", phba->hba_flag, 2942 phba->fcf.fcf_flag); 2943 lpfc_unregister_fcf_rescan(phba); 2944 goto out; 2945 } 2946 2947 /* Get the needed parameters from FCF record */ 2948 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, 2949 &addr_mode, &vlan_id); 2950 2951 /* Log the FCF record information if turned on */ 2952 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, 2953 next_fcf_index); 2954 2955 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 2956 if (!rc) { 2957 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2958 "2848 Remove ineligible FCF (x%x) from " 2959 "from roundrobin bmask\n", fcf_index); 2960 /* Clear roundrobin bmask bit for ineligible FCF */ 2961 lpfc_sli4_fcf_rr_index_clear(phba, fcf_index); 2962 /* Perform next round of roundrobin FCF failover */ 2963 fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba); 2964 rc = lpfc_sli4_fcf_rr_next_proc(phba->pport, fcf_index); 2965 if (rc) 2966 goto out; 2967 goto error_out; 2968 } 2969 2970 if (fcf_index == phba->fcf.current_rec.fcf_indx) { 2971 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2972 "2760 Perform FLOGI roundrobin FCF failover: " 2973 "FCF (x%x) back to FCF (x%x)\n", 2974 phba->fcf.current_rec.fcf_indx, fcf_index); 2975 /* Wait 500 ms before retrying FLOGI to current FCF */ 2976 msleep(500); 2977 lpfc_issue_init_vfi(phba->pport); 2978 goto out; 2979 } 2980 2981 /* Upload new FCF record to the failover FCF record */ 2982 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 2983 "2834 Update current FCF (x%x) with new FCF (x%x)\n", 2984 phba->fcf.failover_rec.fcf_indx, fcf_index); 2985 spin_lock_irq(&phba->hbalock); 2986 __lpfc_update_fcf_record(phba, &phba->fcf.failover_rec, 2987 new_fcf_record, addr_mode, vlan_id, 2988 (boot_flag ? BOOT_ENABLE : 0)); 2989 spin_unlock_irq(&phba->hbalock); 2990 2991 current_fcf_index = phba->fcf.current_rec.fcf_indx; 2992 2993 /* Unregister the current in-use FCF record */ 2994 lpfc_unregister_fcf(phba); 2995 2996 /* Replace in-use record with the new record */ 2997 memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec, 2998 sizeof(struct lpfc_fcf_rec)); 2999 3000 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3001 "2783 Perform FLOGI roundrobin FCF failover: FCF " 3002 "(x%x) to FCF (x%x)\n", current_fcf_index, fcf_index); 3003 3004 error_out: 3005 lpfc_register_fcf(phba); 3006 out: 3007 lpfc_sli4_mbox_cmd_free(phba, mboxq); 3008 } 3009 3010 /** 3011 * lpfc_mbx_cmpl_read_fcf_rec - read fcf completion handler. 3012 * @phba: pointer to lpfc hba data structure. 3013 * @mboxq: pointer to mailbox object. 3014 * 3015 * This is the callback function of read FCF record mailbox command for 3016 * updating the eligible FCF bmask for FLOGI failure roundrobin FCF 3017 * failover when a new FCF event happened. If the FCF read back is 3018 * valid/available and it passes the connection list check, it updates 3019 * the bmask for the eligible FCF record for roundrobin failover. 3020 */ 3021 void 3022 lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 3023 { 3024 struct fcf_record *new_fcf_record; 3025 uint32_t boot_flag, addr_mode; 3026 uint16_t fcf_index, next_fcf_index; 3027 uint16_t vlan_id; 3028 int rc; 3029 3030 /* If link state is not up, no need to proceed */ 3031 if (phba->link_state < LPFC_LINK_UP) 3032 goto out; 3033 3034 /* If FCF discovery period is over, no need to proceed */ 3035 if (!(phba->fcf.fcf_flag & FCF_DISCOVERY)) 3036 goto out; 3037 3038 /* Parse the FCF record from the non-embedded mailbox command */ 3039 new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, 3040 &next_fcf_index); 3041 if (!new_fcf_record) { 3042 lpfc_printf_log(phba, KERN_INFO, LOG_FIP, 3043 "2767 Mailbox command READ_FCF_RECORD " 3044 "failed to retrieve a FCF record.\n"); 3045 goto out; 3046 } 3047 3048 /* Check the connection list for eligibility */ 3049 rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, 3050 &addr_mode, &vlan_id); 3051 3052 /* Log the FCF record information if turned on */ 3053 lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, 3054 next_fcf_index); 3055 3056 if (!rc) 3057 goto out; 3058 3059 /* Update the eligible FCF record index bmask */ 3060 fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); 3061 3062 rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, new_fcf_record); 3063 3064 out: 3065 lpfc_sli4_mbox_cmd_free(phba, mboxq); 3066 } 3067 3068 /** 3069 * lpfc_init_vfi_cmpl - Completion handler for init_vfi mbox command. 3070 * @phba: pointer to lpfc hba data structure. 3071 * @mboxq: pointer to mailbox data structure. 3072 * 3073 * This function handles completion of init vfi mailbox command. 3074 */ 3075 static void 3076 lpfc_init_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 3077 { 3078 struct lpfc_vport *vport = mboxq->vport; 3079 3080 /* 3081 * VFI not supported on interface type 0, just do the flogi 3082 * Also continue if the VFI is in use - just use the same one. 3083 */ 3084 if (mboxq->u.mb.mbxStatus && 3085 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) != 3086 LPFC_SLI_INTF_IF_TYPE_0) && 3087 mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) { 3088 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3089 "2891 Init VFI mailbox failed 0x%x\n", 3090 mboxq->u.mb.mbxStatus); 3091 mempool_free(mboxq, phba->mbox_mem_pool); 3092 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3093 return; 3094 } 3095 3096 lpfc_initial_flogi(vport); 3097 mempool_free(mboxq, phba->mbox_mem_pool); 3098 return; 3099 } 3100 3101 /** 3102 * lpfc_issue_init_vfi - Issue init_vfi mailbox command. 3103 * @vport: pointer to lpfc_vport data structure. 3104 * 3105 * This function issue a init_vfi mailbox command to initialize the VFI and 3106 * VPI for the physical port. 3107 */ 3108 void 3109 lpfc_issue_init_vfi(struct lpfc_vport *vport) 3110 { 3111 LPFC_MBOXQ_t *mboxq; 3112 int rc; 3113 struct lpfc_hba *phba = vport->phba; 3114 3115 mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3116 if (!mboxq) { 3117 lpfc_printf_vlog(vport, KERN_ERR, 3118 LOG_TRACE_EVENT, "2892 Failed to allocate " 3119 "init_vfi mailbox\n"); 3120 return; 3121 } 3122 lpfc_init_vfi(mboxq, vport); 3123 mboxq->mbox_cmpl = lpfc_init_vfi_cmpl; 3124 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT); 3125 if (rc == MBX_NOT_FINISHED) { 3126 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3127 "2893 Failed to issue init_vfi mailbox\n"); 3128 mempool_free(mboxq, vport->phba->mbox_mem_pool); 3129 } 3130 } 3131 3132 /** 3133 * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command. 3134 * @phba: pointer to lpfc hba data structure. 3135 * @mboxq: pointer to mailbox data structure. 3136 * 3137 * This function handles completion of init vpi mailbox command. 3138 */ 3139 void 3140 lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 3141 { 3142 struct lpfc_vport *vport = mboxq->vport; 3143 struct lpfc_nodelist *ndlp; 3144 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3145 3146 if (mboxq->u.mb.mbxStatus) { 3147 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3148 "2609 Init VPI mailbox failed 0x%x\n", 3149 mboxq->u.mb.mbxStatus); 3150 mempool_free(mboxq, phba->mbox_mem_pool); 3151 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3152 return; 3153 } 3154 spin_lock_irq(shost->host_lock); 3155 vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI; 3156 spin_unlock_irq(shost->host_lock); 3157 3158 /* If this port is physical port or FDISC is done, do reg_vpi */ 3159 if ((phba->pport == vport) || (vport->port_state == LPFC_FDISC)) { 3160 ndlp = lpfc_findnode_did(vport, Fabric_DID); 3161 if (!ndlp) 3162 lpfc_printf_vlog(vport, KERN_ERR, 3163 LOG_TRACE_EVENT, 3164 "2731 Cannot find fabric " 3165 "controller node\n"); 3166 else 3167 lpfc_register_new_vport(phba, vport, ndlp); 3168 mempool_free(mboxq, phba->mbox_mem_pool); 3169 return; 3170 } 3171 3172 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) 3173 lpfc_initial_fdisc(vport); 3174 else { 3175 lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP); 3176 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3177 "2606 No NPIV Fabric support\n"); 3178 } 3179 mempool_free(mboxq, phba->mbox_mem_pool); 3180 return; 3181 } 3182 3183 /** 3184 * lpfc_issue_init_vpi - Issue init_vpi mailbox command. 3185 * @vport: pointer to lpfc_vport data structure. 3186 * 3187 * This function issue a init_vpi mailbox command to initialize 3188 * VPI for the vport. 3189 */ 3190 void 3191 lpfc_issue_init_vpi(struct lpfc_vport *vport) 3192 { 3193 LPFC_MBOXQ_t *mboxq; 3194 int rc, vpi; 3195 3196 if ((vport->port_type != LPFC_PHYSICAL_PORT) && (!vport->vpi)) { 3197 vpi = lpfc_alloc_vpi(vport->phba); 3198 if (!vpi) { 3199 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3200 "3303 Failed to obtain vport vpi\n"); 3201 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3202 return; 3203 } 3204 vport->vpi = vpi; 3205 } 3206 3207 mboxq = mempool_alloc(vport->phba->mbox_mem_pool, GFP_KERNEL); 3208 if (!mboxq) { 3209 lpfc_printf_vlog(vport, KERN_ERR, 3210 LOG_TRACE_EVENT, "2607 Failed to allocate " 3211 "init_vpi mailbox\n"); 3212 return; 3213 } 3214 lpfc_init_vpi(vport->phba, mboxq, vport->vpi); 3215 mboxq->vport = vport; 3216 mboxq->mbox_cmpl = lpfc_init_vpi_cmpl; 3217 rc = lpfc_sli_issue_mbox(vport->phba, mboxq, MBX_NOWAIT); 3218 if (rc == MBX_NOT_FINISHED) { 3219 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3220 "2608 Failed to issue init_vpi mailbox\n"); 3221 mempool_free(mboxq, vport->phba->mbox_mem_pool); 3222 } 3223 } 3224 3225 /** 3226 * lpfc_start_fdiscs - send fdiscs for each vports on this port. 3227 * @phba: pointer to lpfc hba data structure. 3228 * 3229 * This function loops through the list of vports on the @phba and issues an 3230 * FDISC if possible. 3231 */ 3232 void 3233 lpfc_start_fdiscs(struct lpfc_hba *phba) 3234 { 3235 struct lpfc_vport **vports; 3236 int i; 3237 3238 vports = lpfc_create_vport_work_array(phba); 3239 if (vports != NULL) { 3240 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 3241 if (vports[i]->port_type == LPFC_PHYSICAL_PORT) 3242 continue; 3243 /* There are no vpi for this vport */ 3244 if (vports[i]->vpi > phba->max_vpi) { 3245 lpfc_vport_set_state(vports[i], 3246 FC_VPORT_FAILED); 3247 continue; 3248 } 3249 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 3250 lpfc_vport_set_state(vports[i], 3251 FC_VPORT_LINKDOWN); 3252 continue; 3253 } 3254 if (vports[i]->fc_flag & FC_VPORT_NEEDS_INIT_VPI) { 3255 lpfc_issue_init_vpi(vports[i]); 3256 continue; 3257 } 3258 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) 3259 lpfc_initial_fdisc(vports[i]); 3260 else { 3261 lpfc_vport_set_state(vports[i], 3262 FC_VPORT_NO_FABRIC_SUPP); 3263 lpfc_printf_vlog(vports[i], KERN_ERR, 3264 LOG_TRACE_EVENT, 3265 "0259 No NPIV " 3266 "Fabric support\n"); 3267 } 3268 } 3269 } 3270 lpfc_destroy_vport_work_array(phba, vports); 3271 } 3272 3273 void 3274 lpfc_mbx_cmpl_reg_vfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 3275 { 3276 struct lpfc_dmabuf *dmabuf = mboxq->ctx_buf; 3277 struct lpfc_vport *vport = mboxq->vport; 3278 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3279 3280 /* 3281 * VFI not supported for interface type 0, so ignore any mailbox 3282 * error (except VFI in use) and continue with the discovery. 3283 */ 3284 if (mboxq->u.mb.mbxStatus && 3285 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) != 3286 LPFC_SLI_INTF_IF_TYPE_0) && 3287 mboxq->u.mb.mbxStatus != MBX_VFI_IN_USE) { 3288 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3289 "2018 REG_VFI mbxStatus error x%x " 3290 "HBA state x%x\n", 3291 mboxq->u.mb.mbxStatus, vport->port_state); 3292 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 3293 /* FLOGI failed, use loop map to make discovery list */ 3294 lpfc_disc_list_loopmap(vport); 3295 /* Start discovery */ 3296 lpfc_disc_start(vport); 3297 goto out_free_mem; 3298 } 3299 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3300 goto out_free_mem; 3301 } 3302 3303 /* If the VFI is already registered, there is nothing else to do 3304 * Unless this was a VFI update and we are in PT2PT mode, then 3305 * we should drop through to set the port state to ready. 3306 */ 3307 if (vport->fc_flag & FC_VFI_REGISTERED) 3308 if (!(phba->sli_rev == LPFC_SLI_REV4 && 3309 vport->fc_flag & FC_PT2PT)) 3310 goto out_free_mem; 3311 3312 /* The VPI is implicitly registered when the VFI is registered */ 3313 spin_lock_irq(shost->host_lock); 3314 vport->vpi_state |= LPFC_VPI_REGISTERED; 3315 vport->fc_flag |= FC_VFI_REGISTERED; 3316 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI; 3317 vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI; 3318 spin_unlock_irq(shost->host_lock); 3319 3320 /* In case SLI4 FC loopback test, we are ready */ 3321 if ((phba->sli_rev == LPFC_SLI_REV4) && 3322 (phba->link_flag & LS_LOOPBACK_MODE)) { 3323 phba->link_state = LPFC_HBA_READY; 3324 goto out_free_mem; 3325 } 3326 3327 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI, 3328 "3313 cmpl reg vfi port_state:%x fc_flag:%x myDid:%x " 3329 "alpacnt:%d LinkState:%x topology:%x\n", 3330 vport->port_state, vport->fc_flag, vport->fc_myDID, 3331 vport->phba->alpa_map[0], 3332 phba->link_state, phba->fc_topology); 3333 3334 if (vport->port_state == LPFC_FABRIC_CFG_LINK) { 3335 /* 3336 * For private loop or for NPort pt2pt, 3337 * just start discovery and we are done. 3338 */ 3339 if ((vport->fc_flag & FC_PT2PT) || 3340 ((phba->fc_topology == LPFC_TOPOLOGY_LOOP) && 3341 !(vport->fc_flag & FC_PUBLIC_LOOP))) { 3342 3343 /* Use loop map to make discovery list */ 3344 lpfc_disc_list_loopmap(vport); 3345 /* Start discovery */ 3346 if (vport->fc_flag & FC_PT2PT) 3347 vport->port_state = LPFC_VPORT_READY; 3348 else 3349 lpfc_disc_start(vport); 3350 } else { 3351 lpfc_start_fdiscs(phba); 3352 lpfc_do_scr_ns_plogi(phba, vport); 3353 } 3354 } 3355 3356 out_free_mem: 3357 mempool_free(mboxq, phba->mbox_mem_pool); 3358 if (dmabuf) { 3359 lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys); 3360 kfree(dmabuf); 3361 } 3362 return; 3363 } 3364 3365 static void 3366 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3367 { 3368 MAILBOX_t *mb = &pmb->u.mb; 3369 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)pmb->ctx_buf; 3370 struct lpfc_vport *vport = pmb->vport; 3371 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3372 struct serv_parm *sp = &vport->fc_sparam; 3373 uint32_t ed_tov; 3374 3375 /* Check for error */ 3376 if (mb->mbxStatus) { 3377 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */ 3378 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3379 "0319 READ_SPARAM mbxStatus error x%x " 3380 "hba state x%x>\n", 3381 mb->mbxStatus, vport->port_state); 3382 lpfc_linkdown(phba); 3383 goto out; 3384 } 3385 3386 memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt, 3387 sizeof (struct serv_parm)); 3388 3389 ed_tov = be32_to_cpu(sp->cmn.e_d_tov); 3390 if (sp->cmn.edtovResolution) /* E_D_TOV ticks are in nanoseconds */ 3391 ed_tov = (ed_tov + 999999) / 1000000; 3392 3393 phba->fc_edtov = ed_tov; 3394 phba->fc_ratov = (2 * ed_tov) / 1000; 3395 if (phba->fc_ratov < FF_DEF_RATOV) { 3396 /* RA_TOV should be atleast 10sec for initial flogi */ 3397 phba->fc_ratov = FF_DEF_RATOV; 3398 } 3399 3400 lpfc_update_vport_wwn(vport); 3401 fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn); 3402 if (vport->port_type == LPFC_PHYSICAL_PORT) { 3403 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn)); 3404 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn)); 3405 } 3406 3407 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3408 kfree(mp); 3409 mempool_free(pmb, phba->mbox_mem_pool); 3410 3411 /* Check if sending the FLOGI is being deferred to after we get 3412 * up to date CSPs from MBX_READ_SPARAM. 3413 */ 3414 if (phba->hba_flag & HBA_DEFER_FLOGI) { 3415 lpfc_initial_flogi(vport); 3416 phba->hba_flag &= ~HBA_DEFER_FLOGI; 3417 } 3418 return; 3419 3420 out: 3421 pmb->ctx_buf = NULL; 3422 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3423 kfree(mp); 3424 lpfc_issue_clear_la(phba, vport); 3425 mempool_free(pmb, phba->mbox_mem_pool); 3426 return; 3427 } 3428 3429 static void 3430 lpfc_mbx_process_link_up(struct lpfc_hba *phba, struct lpfc_mbx_read_top *la) 3431 { 3432 struct lpfc_vport *vport = phba->pport; 3433 LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox = NULL; 3434 struct Scsi_Host *shost; 3435 int i; 3436 struct lpfc_dmabuf *mp; 3437 int rc; 3438 struct fcf_record *fcf_record; 3439 uint32_t fc_flags = 0; 3440 unsigned long iflags; 3441 3442 spin_lock_irqsave(&phba->hbalock, iflags); 3443 phba->fc_linkspeed = bf_get(lpfc_mbx_read_top_link_spd, la); 3444 3445 if (!(phba->hba_flag & HBA_FCOE_MODE)) { 3446 switch (bf_get(lpfc_mbx_read_top_link_spd, la)) { 3447 case LPFC_LINK_SPEED_1GHZ: 3448 case LPFC_LINK_SPEED_2GHZ: 3449 case LPFC_LINK_SPEED_4GHZ: 3450 case LPFC_LINK_SPEED_8GHZ: 3451 case LPFC_LINK_SPEED_10GHZ: 3452 case LPFC_LINK_SPEED_16GHZ: 3453 case LPFC_LINK_SPEED_32GHZ: 3454 case LPFC_LINK_SPEED_64GHZ: 3455 case LPFC_LINK_SPEED_128GHZ: 3456 case LPFC_LINK_SPEED_256GHZ: 3457 break; 3458 default: 3459 phba->fc_linkspeed = LPFC_LINK_SPEED_UNKNOWN; 3460 break; 3461 } 3462 } 3463 3464 if (phba->fc_topology && 3465 phba->fc_topology != bf_get(lpfc_mbx_read_top_topology, la)) { 3466 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, 3467 "3314 Toplogy changed was 0x%x is 0x%x\n", 3468 phba->fc_topology, 3469 bf_get(lpfc_mbx_read_top_topology, la)); 3470 phba->fc_topology_changed = 1; 3471 } 3472 3473 phba->fc_topology = bf_get(lpfc_mbx_read_top_topology, la); 3474 phba->link_flag &= ~(LS_NPIV_FAB_SUPPORTED | LS_CT_VEN_RPA); 3475 3476 shost = lpfc_shost_from_vport(vport); 3477 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 3478 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED; 3479 3480 /* if npiv is enabled and this adapter supports npiv log 3481 * a message that npiv is not supported in this topology 3482 */ 3483 if (phba->cfg_enable_npiv && phba->max_vpi) 3484 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3485 "1309 Link Up Event npiv not supported in loop " 3486 "topology\n"); 3487 /* Get Loop Map information */ 3488 if (bf_get(lpfc_mbx_read_top_il, la)) 3489 fc_flags |= FC_LBIT; 3490 3491 vport->fc_myDID = bf_get(lpfc_mbx_read_top_alpa_granted, la); 3492 i = la->lilpBde64.tus.f.bdeSize; 3493 3494 if (i == 0) { 3495 phba->alpa_map[0] = 0; 3496 } else { 3497 if (vport->cfg_log_verbose & LOG_LINK_EVENT) { 3498 int numalpa, j, k; 3499 union { 3500 uint8_t pamap[16]; 3501 struct { 3502 uint32_t wd1; 3503 uint32_t wd2; 3504 uint32_t wd3; 3505 uint32_t wd4; 3506 } pa; 3507 } un; 3508 numalpa = phba->alpa_map[0]; 3509 j = 0; 3510 while (j < numalpa) { 3511 memset(un.pamap, 0, 16); 3512 for (k = 1; j < numalpa; k++) { 3513 un.pamap[k - 1] = 3514 phba->alpa_map[j + 1]; 3515 j++; 3516 if (k == 16) 3517 break; 3518 } 3519 /* Link Up Event ALPA map */ 3520 lpfc_printf_log(phba, 3521 KERN_WARNING, 3522 LOG_LINK_EVENT, 3523 "1304 Link Up Event " 3524 "ALPA map Data: x%x " 3525 "x%x x%x x%x\n", 3526 un.pa.wd1, un.pa.wd2, 3527 un.pa.wd3, un.pa.wd4); 3528 } 3529 } 3530 } 3531 } else { 3532 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) { 3533 if (phba->max_vpi && phba->cfg_enable_npiv && 3534 (phba->sli_rev >= LPFC_SLI_REV3)) 3535 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED; 3536 } 3537 vport->fc_myDID = phba->fc_pref_DID; 3538 fc_flags |= FC_LBIT; 3539 } 3540 spin_unlock_irqrestore(&phba->hbalock, iflags); 3541 3542 if (fc_flags) { 3543 spin_lock_irqsave(shost->host_lock, iflags); 3544 vport->fc_flag |= fc_flags; 3545 spin_unlock_irqrestore(shost->host_lock, iflags); 3546 } 3547 3548 lpfc_linkup(phba); 3549 sparam_mbox = NULL; 3550 3551 sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3552 if (!sparam_mbox) 3553 goto out; 3554 3555 rc = lpfc_read_sparam(phba, sparam_mbox, 0); 3556 if (rc) { 3557 mempool_free(sparam_mbox, phba->mbox_mem_pool); 3558 goto out; 3559 } 3560 sparam_mbox->vport = vport; 3561 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam; 3562 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT); 3563 if (rc == MBX_NOT_FINISHED) { 3564 mp = (struct lpfc_dmabuf *)sparam_mbox->ctx_buf; 3565 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3566 kfree(mp); 3567 mempool_free(sparam_mbox, phba->mbox_mem_pool); 3568 goto out; 3569 } 3570 3571 if (!(phba->hba_flag & HBA_FCOE_MODE)) { 3572 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3573 if (!cfglink_mbox) 3574 goto out; 3575 vport->port_state = LPFC_LOCAL_CFG_LINK; 3576 lpfc_config_link(phba, cfglink_mbox); 3577 cfglink_mbox->vport = vport; 3578 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link; 3579 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT); 3580 if (rc == MBX_NOT_FINISHED) { 3581 mempool_free(cfglink_mbox, phba->mbox_mem_pool); 3582 goto out; 3583 } 3584 } else { 3585 vport->port_state = LPFC_VPORT_UNKNOWN; 3586 /* 3587 * Add the driver's default FCF record at FCF index 0 now. This 3588 * is phase 1 implementation that support FCF index 0 and driver 3589 * defaults. 3590 */ 3591 if (!(phba->hba_flag & HBA_FIP_SUPPORT)) { 3592 fcf_record = kzalloc(sizeof(struct fcf_record), 3593 GFP_KERNEL); 3594 if (unlikely(!fcf_record)) { 3595 lpfc_printf_log(phba, KERN_ERR, 3596 LOG_TRACE_EVENT, 3597 "2554 Could not allocate memory for " 3598 "fcf record\n"); 3599 rc = -ENODEV; 3600 goto out; 3601 } 3602 3603 lpfc_sli4_build_dflt_fcf_record(phba, fcf_record, 3604 LPFC_FCOE_FCF_DEF_INDEX); 3605 rc = lpfc_sli4_add_fcf_record(phba, fcf_record); 3606 if (unlikely(rc)) { 3607 lpfc_printf_log(phba, KERN_ERR, 3608 LOG_TRACE_EVENT, 3609 "2013 Could not manually add FCF " 3610 "record 0, status %d\n", rc); 3611 rc = -ENODEV; 3612 kfree(fcf_record); 3613 goto out; 3614 } 3615 kfree(fcf_record); 3616 } 3617 /* 3618 * The driver is expected to do FIP/FCF. Call the port 3619 * and get the FCF Table. 3620 */ 3621 spin_lock_irqsave(&phba->hbalock, iflags); 3622 if (phba->hba_flag & FCF_TS_INPROG) { 3623 spin_unlock_irqrestore(&phba->hbalock, iflags); 3624 return; 3625 } 3626 /* This is the initial FCF discovery scan */ 3627 phba->fcf.fcf_flag |= FCF_INIT_DISC; 3628 spin_unlock_irqrestore(&phba->hbalock, iflags); 3629 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, 3630 "2778 Start FCF table scan at linkup\n"); 3631 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, 3632 LPFC_FCOE_FCF_GET_FIRST); 3633 if (rc) { 3634 spin_lock_irqsave(&phba->hbalock, iflags); 3635 phba->fcf.fcf_flag &= ~FCF_INIT_DISC; 3636 spin_unlock_irqrestore(&phba->hbalock, iflags); 3637 goto out; 3638 } 3639 /* Reset FCF roundrobin bmask for new discovery */ 3640 lpfc_sli4_clear_fcf_rr_bmask(phba); 3641 } 3642 3643 /* Prepare for LINK up registrations */ 3644 memset(phba->os_host_name, 0, sizeof(phba->os_host_name)); 3645 scnprintf(phba->os_host_name, sizeof(phba->os_host_name), "%s", 3646 init_utsname()->nodename); 3647 return; 3648 out: 3649 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3650 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3651 "0263 Discovery Mailbox error: state: 0x%x : x%px x%px\n", 3652 vport->port_state, sparam_mbox, cfglink_mbox); 3653 lpfc_issue_clear_la(phba, vport); 3654 return; 3655 } 3656 3657 static void 3658 lpfc_enable_la(struct lpfc_hba *phba) 3659 { 3660 uint32_t control; 3661 struct lpfc_sli *psli = &phba->sli; 3662 spin_lock_irq(&phba->hbalock); 3663 psli->sli_flag |= LPFC_PROCESS_LA; 3664 if (phba->sli_rev <= LPFC_SLI_REV3) { 3665 control = readl(phba->HCregaddr); 3666 control |= HC_LAINT_ENA; 3667 writel(control, phba->HCregaddr); 3668 readl(phba->HCregaddr); /* flush */ 3669 } 3670 spin_unlock_irq(&phba->hbalock); 3671 } 3672 3673 static void 3674 lpfc_mbx_issue_link_down(struct lpfc_hba *phba) 3675 { 3676 lpfc_linkdown(phba); 3677 lpfc_enable_la(phba); 3678 lpfc_unregister_unused_fcf(phba); 3679 /* turn on Link Attention interrupts - no CLEAR_LA needed */ 3680 } 3681 3682 3683 /* 3684 * This routine handles processing a READ_TOPOLOGY mailbox 3685 * command upon completion. It is setup in the LPFC_MBOXQ 3686 * as the completion routine when the command is 3687 * handed off to the SLI layer. SLI4 only. 3688 */ 3689 void 3690 lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3691 { 3692 struct lpfc_vport *vport = pmb->vport; 3693 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3694 struct lpfc_mbx_read_top *la; 3695 struct lpfc_sli_ring *pring; 3696 MAILBOX_t *mb = &pmb->u.mb; 3697 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf); 3698 uint8_t attn_type; 3699 unsigned long iflags; 3700 3701 /* Unblock ELS traffic */ 3702 pring = lpfc_phba_elsring(phba); 3703 if (pring) 3704 pring->flag &= ~LPFC_STOP_IOCB_EVENT; 3705 3706 /* Check for error */ 3707 if (mb->mbxStatus) { 3708 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT, 3709 "1307 READ_LA mbox error x%x state x%x\n", 3710 mb->mbxStatus, vport->port_state); 3711 lpfc_mbx_issue_link_down(phba); 3712 phba->link_state = LPFC_HBA_ERROR; 3713 goto lpfc_mbx_cmpl_read_topology_free_mbuf; 3714 } 3715 3716 la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop; 3717 attn_type = bf_get(lpfc_mbx_read_top_att_type, la); 3718 3719 memcpy(&phba->alpa_map[0], mp->virt, 128); 3720 3721 spin_lock_irqsave(shost->host_lock, iflags); 3722 if (bf_get(lpfc_mbx_read_top_pb, la)) 3723 vport->fc_flag |= FC_BYPASSED_MODE; 3724 else 3725 vport->fc_flag &= ~FC_BYPASSED_MODE; 3726 spin_unlock_irqrestore(shost->host_lock, iflags); 3727 3728 if (phba->fc_eventTag <= la->eventTag) { 3729 phba->fc_stat.LinkMultiEvent++; 3730 if (attn_type == LPFC_ATT_LINK_UP) 3731 if (phba->fc_eventTag != 0) 3732 lpfc_linkdown(phba); 3733 } 3734 3735 phba->fc_eventTag = la->eventTag; 3736 if (phba->sli_rev < LPFC_SLI_REV4) { 3737 spin_lock_irqsave(&phba->hbalock, iflags); 3738 if (bf_get(lpfc_mbx_read_top_mm, la)) 3739 phba->sli.sli_flag |= LPFC_MENLO_MAINT; 3740 else 3741 phba->sli.sli_flag &= ~LPFC_MENLO_MAINT; 3742 spin_unlock_irqrestore(&phba->hbalock, iflags); 3743 } 3744 3745 phba->link_events++; 3746 if ((attn_type == LPFC_ATT_LINK_UP) && 3747 !(phba->sli.sli_flag & LPFC_MENLO_MAINT)) { 3748 phba->fc_stat.LinkUp++; 3749 if (phba->link_flag & LS_LOOPBACK_MODE) { 3750 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3751 "1306 Link Up Event in loop back mode " 3752 "x%x received Data: x%x x%x x%x x%x\n", 3753 la->eventTag, phba->fc_eventTag, 3754 bf_get(lpfc_mbx_read_top_alpa_granted, 3755 la), 3756 bf_get(lpfc_mbx_read_top_link_spd, la), 3757 phba->alpa_map[0]); 3758 } else { 3759 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3760 "1303 Link Up Event x%x received " 3761 "Data: x%x x%x x%x x%x x%x x%x %d\n", 3762 la->eventTag, phba->fc_eventTag, 3763 bf_get(lpfc_mbx_read_top_alpa_granted, 3764 la), 3765 bf_get(lpfc_mbx_read_top_link_spd, la), 3766 phba->alpa_map[0], 3767 bf_get(lpfc_mbx_read_top_mm, la), 3768 bf_get(lpfc_mbx_read_top_fa, la), 3769 phba->wait_4_mlo_maint_flg); 3770 } 3771 lpfc_mbx_process_link_up(phba, la); 3772 3773 if (phba->cmf_active_mode != LPFC_CFG_OFF) 3774 lpfc_cmf_signal_init(phba); 3775 3776 } else if (attn_type == LPFC_ATT_LINK_DOWN || 3777 attn_type == LPFC_ATT_UNEXP_WWPN) { 3778 phba->fc_stat.LinkDown++; 3779 if (phba->link_flag & LS_LOOPBACK_MODE) 3780 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3781 "1308 Link Down Event in loop back mode " 3782 "x%x received " 3783 "Data: x%x x%x x%x\n", 3784 la->eventTag, phba->fc_eventTag, 3785 phba->pport->port_state, vport->fc_flag); 3786 else if (attn_type == LPFC_ATT_UNEXP_WWPN) 3787 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3788 "1313 Link Down Unexpected FA WWPN Event x%x " 3789 "received Data: x%x x%x x%x x%x x%x\n", 3790 la->eventTag, phba->fc_eventTag, 3791 phba->pport->port_state, vport->fc_flag, 3792 bf_get(lpfc_mbx_read_top_mm, la), 3793 bf_get(lpfc_mbx_read_top_fa, la)); 3794 else 3795 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3796 "1305 Link Down Event x%x received " 3797 "Data: x%x x%x x%x x%x x%x\n", 3798 la->eventTag, phba->fc_eventTag, 3799 phba->pport->port_state, vport->fc_flag, 3800 bf_get(lpfc_mbx_read_top_mm, la), 3801 bf_get(lpfc_mbx_read_top_fa, la)); 3802 lpfc_mbx_issue_link_down(phba); 3803 } 3804 if (phba->sli.sli_flag & LPFC_MENLO_MAINT && 3805 attn_type == LPFC_ATT_LINK_UP) { 3806 if (phba->link_state != LPFC_LINK_DOWN) { 3807 phba->fc_stat.LinkDown++; 3808 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3809 "1312 Link Down Event x%x received " 3810 "Data: x%x x%x x%x\n", 3811 la->eventTag, phba->fc_eventTag, 3812 phba->pport->port_state, vport->fc_flag); 3813 lpfc_mbx_issue_link_down(phba); 3814 } else 3815 lpfc_enable_la(phba); 3816 3817 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 3818 "1310 Menlo Maint Mode Link up Event x%x rcvd " 3819 "Data: x%x x%x x%x\n", 3820 la->eventTag, phba->fc_eventTag, 3821 phba->pport->port_state, vport->fc_flag); 3822 /* 3823 * The cmnd that triggered this will be waiting for this 3824 * signal. 3825 */ 3826 /* WAKEUP for MENLO_SET_MODE or MENLO_RESET command. */ 3827 if (phba->wait_4_mlo_maint_flg) { 3828 phba->wait_4_mlo_maint_flg = 0; 3829 wake_up_interruptible(&phba->wait_4_mlo_m_q); 3830 } 3831 } 3832 3833 if ((phba->sli_rev < LPFC_SLI_REV4) && 3834 bf_get(lpfc_mbx_read_top_fa, la)) { 3835 if (phba->sli.sli_flag & LPFC_MENLO_MAINT) 3836 lpfc_issue_clear_la(phba, vport); 3837 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT, 3838 "1311 fa %d\n", 3839 bf_get(lpfc_mbx_read_top_fa, la)); 3840 } 3841 3842 lpfc_mbx_cmpl_read_topology_free_mbuf: 3843 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3844 kfree(mp); 3845 mempool_free(pmb, phba->mbox_mem_pool); 3846 return; 3847 } 3848 3849 /* 3850 * This routine handles processing a REG_LOGIN mailbox 3851 * command upon completion. It is setup in the LPFC_MBOXQ 3852 * as the completion routine when the command is 3853 * handed off to the SLI layer. 3854 */ 3855 void 3856 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3857 { 3858 struct lpfc_vport *vport = pmb->vport; 3859 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf); 3860 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 3861 3862 pmb->ctx_buf = NULL; 3863 pmb->ctx_ndlp = NULL; 3864 3865 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI | LOG_NODE | LOG_DISCOVERY, 3866 "0002 rpi:%x DID:%x flg:%x %d x%px\n", 3867 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag, 3868 kref_read(&ndlp->kref), 3869 ndlp); 3870 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND) 3871 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND; 3872 3873 if (ndlp->nlp_flag & NLP_IGNR_REG_CMPL || 3874 ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) { 3875 /* We rcvd a rscn after issuing this 3876 * mbox reg login, we may have cycled 3877 * back through the state and be 3878 * back at reg login state so this 3879 * mbox needs to be ignored becase 3880 * there is another reg login in 3881 * process. 3882 */ 3883 spin_lock_irq(&ndlp->lock); 3884 ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL; 3885 spin_unlock_irq(&ndlp->lock); 3886 3887 /* 3888 * We cannot leave the RPI registered because 3889 * if we go thru discovery again for this ndlp 3890 * a subsequent REG_RPI will fail. 3891 */ 3892 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 3893 lpfc_unreg_rpi(vport, ndlp); 3894 } 3895 3896 /* Call state machine */ 3897 lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN); 3898 3899 lpfc_mbuf_free(phba, mp->virt, mp->phys); 3900 kfree(mp); 3901 mempool_free(pmb, phba->mbox_mem_pool); 3902 /* decrement the node reference count held for this callback 3903 * function. 3904 */ 3905 lpfc_nlp_put(ndlp); 3906 3907 return; 3908 } 3909 3910 static void 3911 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3912 { 3913 MAILBOX_t *mb = &pmb->u.mb; 3914 struct lpfc_vport *vport = pmb->vport; 3915 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3916 3917 switch (mb->mbxStatus) { 3918 case 0x0011: 3919 case 0x0020: 3920 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 3921 "0911 cmpl_unreg_vpi, mb status = 0x%x\n", 3922 mb->mbxStatus); 3923 break; 3924 /* If VPI is busy, reset the HBA */ 3925 case 0x9700: 3926 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3927 "2798 Unreg_vpi failed vpi 0x%x, mb status = 0x%x\n", 3928 vport->vpi, mb->mbxStatus); 3929 if (!(phba->pport->load_flag & FC_UNLOADING)) 3930 lpfc_workq_post_event(phba, NULL, NULL, 3931 LPFC_EVT_RESET_HBA); 3932 } 3933 spin_lock_irq(shost->host_lock); 3934 vport->vpi_state &= ~LPFC_VPI_REGISTERED; 3935 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; 3936 spin_unlock_irq(shost->host_lock); 3937 mempool_free(pmb, phba->mbox_mem_pool); 3938 lpfc_cleanup_vports_rrqs(vport, NULL); 3939 /* 3940 * This shost reference might have been taken at the beginning of 3941 * lpfc_vport_delete() 3942 */ 3943 if ((vport->load_flag & FC_UNLOADING) && (vport != phba->pport)) 3944 scsi_host_put(shost); 3945 } 3946 3947 int 3948 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport) 3949 { 3950 struct lpfc_hba *phba = vport->phba; 3951 LPFC_MBOXQ_t *mbox; 3952 int rc; 3953 3954 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 3955 if (!mbox) 3956 return 1; 3957 3958 lpfc_unreg_vpi(phba, vport->vpi, mbox); 3959 mbox->vport = vport; 3960 mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi; 3961 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 3962 if (rc == MBX_NOT_FINISHED) { 3963 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 3964 "1800 Could not issue unreg_vpi\n"); 3965 mempool_free(mbox, phba->mbox_mem_pool); 3966 return rc; 3967 } 3968 return 0; 3969 } 3970 3971 static void 3972 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 3973 { 3974 struct lpfc_vport *vport = pmb->vport; 3975 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3976 MAILBOX_t *mb = &pmb->u.mb; 3977 3978 switch (mb->mbxStatus) { 3979 case 0x0011: 3980 case 0x9601: 3981 case 0x9602: 3982 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 3983 "0912 cmpl_reg_vpi, mb status = 0x%x\n", 3984 mb->mbxStatus); 3985 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 3986 spin_lock_irq(shost->host_lock); 3987 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP); 3988 spin_unlock_irq(shost->host_lock); 3989 vport->fc_myDID = 0; 3990 3991 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 3992 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) { 3993 if (phba->nvmet_support) 3994 lpfc_nvmet_update_targetport(phba); 3995 else 3996 lpfc_nvme_update_localport(vport); 3997 } 3998 goto out; 3999 } 4000 4001 spin_lock_irq(shost->host_lock); 4002 vport->vpi_state |= LPFC_VPI_REGISTERED; 4003 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI; 4004 spin_unlock_irq(shost->host_lock); 4005 vport->num_disc_nodes = 0; 4006 /* go thru NPR list and issue ELS PLOGIs */ 4007 if (vport->fc_npr_cnt) 4008 lpfc_els_disc_plogi(vport); 4009 4010 if (!vport->num_disc_nodes) { 4011 spin_lock_irq(shost->host_lock); 4012 vport->fc_flag &= ~FC_NDISC_ACTIVE; 4013 spin_unlock_irq(shost->host_lock); 4014 lpfc_can_disctmo(vport); 4015 } 4016 vport->port_state = LPFC_VPORT_READY; 4017 4018 out: 4019 mempool_free(pmb, phba->mbox_mem_pool); 4020 return; 4021 } 4022 4023 /** 4024 * lpfc_create_static_vport - Read HBA config region to create static vports. 4025 * @phba: pointer to lpfc hba data structure. 4026 * 4027 * This routine issue a DUMP mailbox command for config region 22 to get 4028 * the list of static vports to be created. The function create vports 4029 * based on the information returned from the HBA. 4030 **/ 4031 void 4032 lpfc_create_static_vport(struct lpfc_hba *phba) 4033 { 4034 LPFC_MBOXQ_t *pmb = NULL; 4035 MAILBOX_t *mb; 4036 struct static_vport_info *vport_info; 4037 int mbx_wait_rc = 0, i; 4038 struct fc_vport_identifiers vport_id; 4039 struct fc_vport *new_fc_vport; 4040 struct Scsi_Host *shost; 4041 struct lpfc_vport *vport; 4042 uint16_t offset = 0; 4043 uint8_t *vport_buff; 4044 struct lpfc_dmabuf *mp; 4045 uint32_t byte_count = 0; 4046 4047 pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 4048 if (!pmb) { 4049 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 4050 "0542 lpfc_create_static_vport failed to" 4051 " allocate mailbox memory\n"); 4052 return; 4053 } 4054 memset(pmb, 0, sizeof(LPFC_MBOXQ_t)); 4055 mb = &pmb->u.mb; 4056 4057 vport_info = kzalloc(sizeof(struct static_vport_info), GFP_KERNEL); 4058 if (!vport_info) { 4059 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 4060 "0543 lpfc_create_static_vport failed to" 4061 " allocate vport_info\n"); 4062 mempool_free(pmb, phba->mbox_mem_pool); 4063 return; 4064 } 4065 4066 vport_buff = (uint8_t *) vport_info; 4067 do { 4068 /* free dma buffer from previous round */ 4069 if (pmb->ctx_buf) { 4070 mp = (struct lpfc_dmabuf *)pmb->ctx_buf; 4071 lpfc_mbuf_free(phba, mp->virt, mp->phys); 4072 kfree(mp); 4073 } 4074 if (lpfc_dump_static_vport(phba, pmb, offset)) 4075 goto out; 4076 4077 pmb->vport = phba->pport; 4078 mbx_wait_rc = lpfc_sli_issue_mbox_wait(phba, pmb, 4079 LPFC_MBOX_TMO); 4080 4081 if ((mbx_wait_rc != MBX_SUCCESS) || mb->mbxStatus) { 4082 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, 4083 "0544 lpfc_create_static_vport failed to" 4084 " issue dump mailbox command ret 0x%x " 4085 "status 0x%x\n", 4086 mbx_wait_rc, mb->mbxStatus); 4087 goto out; 4088 } 4089 4090 if (phba->sli_rev == LPFC_SLI_REV4) { 4091 byte_count = pmb->u.mqe.un.mb_words[5]; 4092 mp = (struct lpfc_dmabuf *)pmb->ctx_buf; 4093 if (byte_count > sizeof(struct static_vport_info) - 4094 offset) 4095 byte_count = sizeof(struct static_vport_info) 4096 - offset; 4097 memcpy(vport_buff + offset, mp->virt, byte_count); 4098 offset += byte_count; 4099 } else { 4100 if (mb->un.varDmp.word_cnt > 4101 sizeof(struct static_vport_info) - offset) 4102 mb->un.varDmp.word_cnt = 4103 sizeof(struct static_vport_info) 4104 - offset; 4105 byte_count = mb->un.varDmp.word_cnt; 4106 lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET, 4107 vport_buff + offset, 4108 byte_count); 4109 4110 offset += byte_count; 4111 } 4112 4113 } while (byte_count && 4114 offset < sizeof(struct static_vport_info)); 4115 4116 4117 if ((le32_to_cpu(vport_info->signature) != VPORT_INFO_SIG) || 4118 ((le32_to_cpu(vport_info->rev) & VPORT_INFO_REV_MASK) 4119 != VPORT_INFO_REV)) { 4120 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 4121 "0545 lpfc_create_static_vport bad" 4122 " information header 0x%x 0x%x\n", 4123 le32_to_cpu(vport_info->signature), 4124 le32_to_cpu(vport_info->rev) & 4125 VPORT_INFO_REV_MASK); 4126 4127 goto out; 4128 } 4129 4130 shost = lpfc_shost_from_vport(phba->pport); 4131 4132 for (i = 0; i < MAX_STATIC_VPORT_COUNT; i++) { 4133 memset(&vport_id, 0, sizeof(vport_id)); 4134 vport_id.port_name = wwn_to_u64(vport_info->vport_list[i].wwpn); 4135 vport_id.node_name = wwn_to_u64(vport_info->vport_list[i].wwnn); 4136 if (!vport_id.port_name || !vport_id.node_name) 4137 continue; 4138 4139 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR; 4140 vport_id.vport_type = FC_PORTTYPE_NPIV; 4141 vport_id.disable = false; 4142 new_fc_vport = fc_vport_create(shost, 0, &vport_id); 4143 4144 if (!new_fc_vport) { 4145 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, 4146 "0546 lpfc_create_static_vport failed to" 4147 " create vport\n"); 4148 continue; 4149 } 4150 4151 vport = *(struct lpfc_vport **)new_fc_vport->dd_data; 4152 vport->vport_flag |= STATIC_VPORT; 4153 } 4154 4155 out: 4156 kfree(vport_info); 4157 if (mbx_wait_rc != MBX_TIMEOUT) { 4158 if (pmb->ctx_buf) { 4159 mp = (struct lpfc_dmabuf *)pmb->ctx_buf; 4160 lpfc_mbuf_free(phba, mp->virt, mp->phys); 4161 kfree(mp); 4162 } 4163 mempool_free(pmb, phba->mbox_mem_pool); 4164 } 4165 4166 return; 4167 } 4168 4169 /* 4170 * This routine handles processing a Fabric REG_LOGIN mailbox 4171 * command upon completion. It is setup in the LPFC_MBOXQ 4172 * as the completion routine when the command is 4173 * handed off to the SLI layer. 4174 */ 4175 void 4176 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 4177 { 4178 struct lpfc_vport *vport = pmb->vport; 4179 MAILBOX_t *mb = &pmb->u.mb; 4180 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf); 4181 struct lpfc_nodelist *ndlp; 4182 struct Scsi_Host *shost; 4183 4184 ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 4185 pmb->ctx_ndlp = NULL; 4186 pmb->ctx_buf = NULL; 4187 4188 if (mb->mbxStatus) { 4189 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4190 "0258 Register Fabric login error: 0x%x\n", 4191 mb->mbxStatus); 4192 lpfc_mbuf_free(phba, mp->virt, mp->phys); 4193 kfree(mp); 4194 mempool_free(pmb, phba->mbox_mem_pool); 4195 4196 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 4197 /* FLOGI failed, use loop map to make discovery list */ 4198 lpfc_disc_list_loopmap(vport); 4199 4200 /* Start discovery */ 4201 lpfc_disc_start(vport); 4202 /* Decrement the reference count to ndlp after the 4203 * reference to the ndlp are done. 4204 */ 4205 lpfc_nlp_put(ndlp); 4206 return; 4207 } 4208 4209 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 4210 /* Decrement the reference count to ndlp after the reference 4211 * to the ndlp are done. 4212 */ 4213 lpfc_nlp_put(ndlp); 4214 return; 4215 } 4216 4217 if (phba->sli_rev < LPFC_SLI_REV4) 4218 ndlp->nlp_rpi = mb->un.varWords[0]; 4219 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 4220 ndlp->nlp_type |= NLP_FABRIC; 4221 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 4222 4223 if (vport->port_state == LPFC_FABRIC_CFG_LINK) { 4224 /* when physical port receive logo donot start 4225 * vport discovery */ 4226 if (!(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG)) 4227 lpfc_start_fdiscs(phba); 4228 else { 4229 shost = lpfc_shost_from_vport(vport); 4230 spin_lock_irq(shost->host_lock); 4231 vport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG ; 4232 spin_unlock_irq(shost->host_lock); 4233 } 4234 lpfc_do_scr_ns_plogi(phba, vport); 4235 } 4236 4237 lpfc_mbuf_free(phba, mp->virt, mp->phys); 4238 kfree(mp); 4239 mempool_free(pmb, phba->mbox_mem_pool); 4240 4241 /* Drop the reference count from the mbox at the end after 4242 * all the current reference to the ndlp have been done. 4243 */ 4244 lpfc_nlp_put(ndlp); 4245 return; 4246 } 4247 4248 /* 4249 * This routine will issue a GID_FT for each FC4 Type supported 4250 * by the driver. ALL GID_FTs must complete before discovery is started. 4251 */ 4252 int 4253 lpfc_issue_gidft(struct lpfc_vport *vport) 4254 { 4255 /* Good status, issue CT Request to NameServer */ 4256 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 4257 (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP)) { 4258 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_FCP)) { 4259 /* Cannot issue NameServer FCP Query, so finish up 4260 * discovery 4261 */ 4262 lpfc_printf_vlog(vport, KERN_ERR, 4263 LOG_TRACE_EVENT, 4264 "0604 %s FC TYPE %x %s\n", 4265 "Failed to issue GID_FT to ", 4266 FC_TYPE_FCP, 4267 "Finishing discovery."); 4268 return 0; 4269 } 4270 vport->gidft_inp++; 4271 } 4272 4273 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 4274 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) { 4275 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, SLI_CTPT_NVME)) { 4276 /* Cannot issue NameServer NVME Query, so finish up 4277 * discovery 4278 */ 4279 lpfc_printf_vlog(vport, KERN_ERR, 4280 LOG_TRACE_EVENT, 4281 "0605 %s FC_TYPE %x %s %d\n", 4282 "Failed to issue GID_FT to ", 4283 FC_TYPE_NVME, 4284 "Finishing discovery: gidftinp ", 4285 vport->gidft_inp); 4286 if (vport->gidft_inp == 0) 4287 return 0; 4288 } else 4289 vport->gidft_inp++; 4290 } 4291 return vport->gidft_inp; 4292 } 4293 4294 /** 4295 * lpfc_issue_gidpt - issue a GID_PT for all N_Ports 4296 * @vport: The virtual port for which this call is being executed. 4297 * 4298 * This routine will issue a GID_PT to get a list of all N_Ports 4299 * 4300 * Return value : 4301 * 0 - Failure to issue a GID_PT 4302 * 1 - GID_PT issued 4303 **/ 4304 int 4305 lpfc_issue_gidpt(struct lpfc_vport *vport) 4306 { 4307 /* Good status, issue CT Request to NameServer */ 4308 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_PT, 0, GID_PT_N_PORT)) { 4309 /* Cannot issue NameServer FCP Query, so finish up 4310 * discovery 4311 */ 4312 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4313 "0606 %s Port TYPE %x %s\n", 4314 "Failed to issue GID_PT to ", 4315 GID_PT_N_PORT, 4316 "Finishing discovery."); 4317 return 0; 4318 } 4319 vport->gidft_inp++; 4320 return 1; 4321 } 4322 4323 /* 4324 * This routine handles processing a NameServer REG_LOGIN mailbox 4325 * command upon completion. It is setup in the LPFC_MBOXQ 4326 * as the completion routine when the command is 4327 * handed off to the SLI layer. 4328 */ 4329 void 4330 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 4331 { 4332 MAILBOX_t *mb = &pmb->u.mb; 4333 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf); 4334 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 4335 struct lpfc_vport *vport = pmb->vport; 4336 int rc; 4337 4338 pmb->ctx_buf = NULL; 4339 pmb->ctx_ndlp = NULL; 4340 vport->gidft_inp = 0; 4341 4342 if (mb->mbxStatus) { 4343 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4344 "0260 Register NameServer error: 0x%x\n", 4345 mb->mbxStatus); 4346 4347 out: 4348 /* decrement the node reference count held for this 4349 * callback function. 4350 */ 4351 lpfc_nlp_put(ndlp); 4352 lpfc_mbuf_free(phba, mp->virt, mp->phys); 4353 kfree(mp); 4354 mempool_free(pmb, phba->mbox_mem_pool); 4355 4356 /* If the node is not registered with the scsi or nvme 4357 * transport, remove the fabric node. The failed reg_login 4358 * is terminal. 4359 */ 4360 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) { 4361 spin_lock_irq(&ndlp->lock); 4362 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; 4363 spin_unlock_irq(&ndlp->lock); 4364 lpfc_nlp_not_used(ndlp); 4365 } 4366 4367 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 4368 /* 4369 * RegLogin failed, use loop map to make discovery 4370 * list 4371 */ 4372 lpfc_disc_list_loopmap(vport); 4373 4374 /* Start discovery */ 4375 lpfc_disc_start(vport); 4376 return; 4377 } 4378 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 4379 return; 4380 } 4381 4382 if (phba->sli_rev < LPFC_SLI_REV4) 4383 ndlp->nlp_rpi = mb->un.varWords[0]; 4384 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 4385 ndlp->nlp_type |= NLP_FABRIC; 4386 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 4387 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY, 4388 "0003 rpi:%x DID:%x flg:%x %d x%px\n", 4389 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag, 4390 kref_read(&ndlp->kref), 4391 ndlp); 4392 4393 if (vport->port_state < LPFC_VPORT_READY) { 4394 /* Link up discovery requires Fabric registration. */ 4395 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0); 4396 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0); 4397 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0); 4398 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0); 4399 4400 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 4401 (vport->cfg_enable_fc4_type == LPFC_ENABLE_FCP)) 4402 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, FC_TYPE_FCP); 4403 4404 if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) || 4405 (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) 4406 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 4407 FC_TYPE_NVME); 4408 4409 /* Issue SCR just before NameServer GID_FT Query */ 4410 lpfc_issue_els_scr(vport, 0); 4411 4412 /* Link was bounced or a Fabric LOGO occurred. Start EDC 4413 * with initial FW values provided the congestion mode is 4414 * not off. Note that signals may or may not be supported 4415 * by the adapter but FPIN is provided by default for 1 4416 * or both missing signals support. 4417 */ 4418 if (phba->cmf_active_mode != LPFC_CFG_OFF) { 4419 phba->cgn_reg_fpin = phba->cgn_init_reg_fpin; 4420 phba->cgn_reg_signal = phba->cgn_init_reg_signal; 4421 rc = lpfc_issue_els_edc(vport, 0); 4422 lpfc_printf_log(phba, KERN_INFO, 4423 LOG_INIT | LOG_ELS | LOG_DISCOVERY, 4424 "4220 EDC issue error x%x, Data: x%x\n", 4425 rc, phba->cgn_init_reg_signal); 4426 } else { 4427 lpfc_issue_els_rdf(vport, 0); 4428 } 4429 } 4430 4431 vport->fc_ns_retry = 0; 4432 if (lpfc_issue_gidft(vport) == 0) 4433 goto out; 4434 4435 /* 4436 * At this point in time we may need to wait for multiple 4437 * SLI_CTNS_GID_FT CT commands to complete before we start discovery. 4438 * 4439 * decrement the node reference count held for this 4440 * callback function. 4441 */ 4442 lpfc_nlp_put(ndlp); 4443 lpfc_mbuf_free(phba, mp->virt, mp->phys); 4444 kfree(mp); 4445 mempool_free(pmb, phba->mbox_mem_pool); 4446 4447 return; 4448 } 4449 4450 /* 4451 * This routine handles processing a Fabric Controller REG_LOGIN mailbox 4452 * command upon completion. It is setup in the LPFC_MBOXQ 4453 * as the completion routine when the command is handed off to the SLI layer. 4454 */ 4455 void 4456 lpfc_mbx_cmpl_fc_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 4457 { 4458 struct lpfc_vport *vport = pmb->vport; 4459 MAILBOX_t *mb = &pmb->u.mb; 4460 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf); 4461 struct lpfc_nodelist *ndlp; 4462 4463 ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 4464 pmb->ctx_ndlp = NULL; 4465 pmb->ctx_buf = NULL; 4466 4467 if (mb->mbxStatus) { 4468 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4469 "0933 %s: Register FC login error: 0x%x\n", 4470 __func__, mb->mbxStatus); 4471 goto out; 4472 } 4473 4474 lpfc_check_nlp_post_devloss(vport, ndlp); 4475 4476 if (phba->sli_rev < LPFC_SLI_REV4) 4477 ndlp->nlp_rpi = mb->un.varWords[0]; 4478 4479 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 4480 "0934 %s: Complete FC x%x RegLogin rpi x%x ste x%x\n", 4481 __func__, ndlp->nlp_DID, ndlp->nlp_rpi, 4482 ndlp->nlp_state); 4483 4484 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 4485 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND; 4486 ndlp->nlp_type |= NLP_FABRIC; 4487 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 4488 4489 out: 4490 lpfc_mbuf_free(phba, mp->virt, mp->phys); 4491 kfree(mp); 4492 mempool_free(pmb, phba->mbox_mem_pool); 4493 4494 /* Drop the reference count from the mbox at the end after 4495 * all the current reference to the ndlp have been done. 4496 */ 4497 lpfc_nlp_put(ndlp); 4498 } 4499 4500 static void 4501 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4502 { 4503 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4504 struct fc_rport *rport; 4505 struct lpfc_rport_data *rdata; 4506 struct fc_rport_identifiers rport_ids; 4507 struct lpfc_hba *phba = vport->phba; 4508 unsigned long flags; 4509 4510 if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME) 4511 return; 4512 4513 /* Remote port has reappeared. Re-register w/ FC transport */ 4514 rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn); 4515 rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn); 4516 rport_ids.port_id = ndlp->nlp_DID; 4517 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN; 4518 4519 4520 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 4521 "rport add: did:x%x flg:x%x type x%x", 4522 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 4523 4524 /* Don't add the remote port if unloading. */ 4525 if (vport->load_flag & FC_UNLOADING) 4526 return; 4527 4528 /* 4529 * Disassociate any older association between this ndlp and rport 4530 */ 4531 if (ndlp->rport) { 4532 rdata = ndlp->rport->dd_data; 4533 rdata->pnode = NULL; 4534 } 4535 4536 ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids); 4537 if (!rport) { 4538 dev_printk(KERN_WARNING, &phba->pcidev->dev, 4539 "Warning: fc_remote_port_add failed\n"); 4540 return; 4541 } 4542 4543 /* Successful port add. Complete initializing node data */ 4544 rport->maxframe_size = ndlp->nlp_maxframe; 4545 rport->supported_classes = ndlp->nlp_class_sup; 4546 rdata = rport->dd_data; 4547 rdata->pnode = lpfc_nlp_get(ndlp); 4548 if (!rdata->pnode) { 4549 dev_warn(&phba->pcidev->dev, 4550 "Warning - node ref failed. Unreg rport\n"); 4551 fc_remote_port_delete(rport); 4552 ndlp->rport = NULL; 4553 return; 4554 } 4555 4556 spin_lock_irqsave(&ndlp->lock, flags); 4557 ndlp->fc4_xpt_flags |= SCSI_XPT_REGD; 4558 spin_unlock_irqrestore(&ndlp->lock, flags); 4559 4560 if (ndlp->nlp_type & NLP_FCP_TARGET) 4561 rport_ids.roles |= FC_PORT_ROLE_FCP_TARGET; 4562 if (ndlp->nlp_type & NLP_FCP_INITIATOR) 4563 rport_ids.roles |= FC_PORT_ROLE_FCP_INITIATOR; 4564 if (ndlp->nlp_type & NLP_NVME_INITIATOR) 4565 rport_ids.roles |= FC_PORT_ROLE_NVME_INITIATOR; 4566 if (ndlp->nlp_type & NLP_NVME_TARGET) 4567 rport_ids.roles |= FC_PORT_ROLE_NVME_TARGET; 4568 if (ndlp->nlp_type & NLP_NVME_DISCOVERY) 4569 rport_ids.roles |= FC_PORT_ROLE_NVME_DISCOVERY; 4570 4571 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN) 4572 fc_remote_port_rolechg(rport, rport_ids.roles); 4573 4574 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, 4575 "3183 %s rport x%px DID x%x, role x%x refcnt %d\n", 4576 __func__, rport, rport->port_id, rport->roles, 4577 kref_read(&ndlp->kref)); 4578 4579 if ((rport->scsi_target_id != -1) && 4580 (rport->scsi_target_id < LPFC_MAX_TARGET)) { 4581 ndlp->nlp_sid = rport->scsi_target_id; 4582 } 4583 4584 return; 4585 } 4586 4587 static void 4588 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp) 4589 { 4590 struct fc_rport *rport = ndlp->rport; 4591 struct lpfc_vport *vport = ndlp->vport; 4592 4593 if (vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME) 4594 return; 4595 4596 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 4597 "rport delete: did:x%x flg:x%x type x%x", 4598 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 4599 4600 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 4601 "3184 rport unregister x%06x, rport x%px " 4602 "xptflg x%x refcnt %d\n", 4603 ndlp->nlp_DID, rport, ndlp->fc4_xpt_flags, 4604 kref_read(&ndlp->kref)); 4605 4606 fc_remote_port_delete(rport); 4607 lpfc_nlp_put(ndlp); 4608 } 4609 4610 static void 4611 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count) 4612 { 4613 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4614 unsigned long iflags; 4615 4616 spin_lock_irqsave(shost->host_lock, iflags); 4617 switch (state) { 4618 case NLP_STE_UNUSED_NODE: 4619 vport->fc_unused_cnt += count; 4620 break; 4621 case NLP_STE_PLOGI_ISSUE: 4622 vport->fc_plogi_cnt += count; 4623 break; 4624 case NLP_STE_ADISC_ISSUE: 4625 vport->fc_adisc_cnt += count; 4626 break; 4627 case NLP_STE_REG_LOGIN_ISSUE: 4628 vport->fc_reglogin_cnt += count; 4629 break; 4630 case NLP_STE_PRLI_ISSUE: 4631 vport->fc_prli_cnt += count; 4632 break; 4633 case NLP_STE_UNMAPPED_NODE: 4634 vport->fc_unmap_cnt += count; 4635 break; 4636 case NLP_STE_MAPPED_NODE: 4637 vport->fc_map_cnt += count; 4638 break; 4639 case NLP_STE_NPR_NODE: 4640 if (vport->fc_npr_cnt == 0 && count == -1) 4641 vport->fc_npr_cnt = 0; 4642 else 4643 vport->fc_npr_cnt += count; 4644 break; 4645 } 4646 spin_unlock_irqrestore(shost->host_lock, iflags); 4647 } 4648 4649 /* Register a node with backend if not already done */ 4650 void 4651 lpfc_nlp_reg_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4652 { 4653 unsigned long iflags; 4654 4655 lpfc_check_nlp_post_devloss(vport, ndlp); 4656 4657 spin_lock_irqsave(&ndlp->lock, iflags); 4658 if (ndlp->fc4_xpt_flags & NLP_XPT_REGD) { 4659 /* Already registered with backend, trigger rescan */ 4660 spin_unlock_irqrestore(&ndlp->lock, iflags); 4661 4662 if (ndlp->fc4_xpt_flags & NVME_XPT_REGD && 4663 ndlp->nlp_type & (NLP_NVME_TARGET | NLP_NVME_DISCOVERY)) { 4664 lpfc_nvme_rescan_port(vport, ndlp); 4665 } 4666 return; 4667 } 4668 4669 ndlp->fc4_xpt_flags |= NLP_XPT_REGD; 4670 spin_unlock_irqrestore(&ndlp->lock, iflags); 4671 4672 if (lpfc_valid_xpt_node(ndlp)) { 4673 vport->phba->nport_event_cnt++; 4674 /* 4675 * Tell the fc transport about the port, if we haven't 4676 * already. If we have, and it's a scsi entity, be 4677 */ 4678 lpfc_register_remote_port(vport, ndlp); 4679 } 4680 4681 /* We are done if we do not have any NVME remote node */ 4682 if (!(ndlp->nlp_fc4_type & NLP_FC4_NVME)) 4683 return; 4684 4685 /* Notify the NVME transport of this new rport. */ 4686 if (vport->phba->sli_rev >= LPFC_SLI_REV4 && 4687 ndlp->nlp_fc4_type & NLP_FC4_NVME) { 4688 if (vport->phba->nvmet_support == 0) { 4689 /* Register this rport with the transport. 4690 * Only NVME Target Rports are registered with 4691 * the transport. 4692 */ 4693 if (ndlp->nlp_type & NLP_NVME_TARGET) { 4694 vport->phba->nport_event_cnt++; 4695 lpfc_nvme_register_port(vport, ndlp); 4696 } 4697 } else { 4698 /* Just take an NDLP ref count since the 4699 * target does not register rports. 4700 */ 4701 lpfc_nlp_get(ndlp); 4702 } 4703 } 4704 } 4705 4706 /* Unregister a node with backend if not already done */ 4707 void 4708 lpfc_nlp_unreg_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4709 { 4710 unsigned long iflags; 4711 4712 spin_lock_irqsave(&ndlp->lock, iflags); 4713 if (!(ndlp->fc4_xpt_flags & NLP_XPT_REGD)) { 4714 spin_unlock_irqrestore(&ndlp->lock, iflags); 4715 return; 4716 } 4717 4718 ndlp->fc4_xpt_flags &= ~NLP_XPT_REGD; 4719 spin_unlock_irqrestore(&ndlp->lock, iflags); 4720 4721 if (ndlp->rport && 4722 ndlp->fc4_xpt_flags & SCSI_XPT_REGD) { 4723 vport->phba->nport_event_cnt++; 4724 lpfc_unregister_remote_port(ndlp); 4725 } 4726 4727 if (ndlp->fc4_xpt_flags & NVME_XPT_REGD) { 4728 vport->phba->nport_event_cnt++; 4729 if (vport->phba->nvmet_support == 0) { 4730 /* Start devloss if target. */ 4731 if (ndlp->nlp_type & NLP_NVME_TARGET) 4732 lpfc_nvme_unregister_port(vport, ndlp); 4733 } else { 4734 /* NVMET has no upcall. */ 4735 lpfc_nlp_put(ndlp); 4736 } 4737 } 4738 4739 } 4740 4741 /* 4742 * Adisc state change handling 4743 */ 4744 static void 4745 lpfc_handle_adisc_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4746 int new_state) 4747 { 4748 switch (new_state) { 4749 /* 4750 * Any state to ADISC_ISSUE 4751 * Do nothing, adisc cmpl handling will trigger state changes 4752 */ 4753 case NLP_STE_ADISC_ISSUE: 4754 break; 4755 4756 /* 4757 * ADISC_ISSUE to mapped states 4758 * Trigger a registration with backend, it will be nop if 4759 * already registered 4760 */ 4761 case NLP_STE_UNMAPPED_NODE: 4762 ndlp->nlp_type |= NLP_FC_NODE; 4763 fallthrough; 4764 case NLP_STE_MAPPED_NODE: 4765 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 4766 lpfc_nlp_reg_node(vport, ndlp); 4767 break; 4768 4769 /* 4770 * ADISC_ISSUE to non-mapped states 4771 * We are moving from ADISC_ISSUE to a non-mapped state because 4772 * ADISC failed, we would have skipped unregistering with 4773 * backend, attempt it now 4774 */ 4775 case NLP_STE_NPR_NODE: 4776 ndlp->nlp_flag &= ~NLP_RCV_PLOGI; 4777 fallthrough; 4778 default: 4779 lpfc_nlp_unreg_node(vport, ndlp); 4780 break; 4781 } 4782 4783 } 4784 4785 static void 4786 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4787 int old_state, int new_state) 4788 { 4789 /* Trap ADISC changes here */ 4790 if (new_state == NLP_STE_ADISC_ISSUE || 4791 old_state == NLP_STE_ADISC_ISSUE) { 4792 lpfc_handle_adisc_state(vport, ndlp, new_state); 4793 return; 4794 } 4795 4796 if (new_state == NLP_STE_UNMAPPED_NODE) { 4797 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 4798 ndlp->nlp_type |= NLP_FC_NODE; 4799 } 4800 if (new_state == NLP_STE_MAPPED_NODE) 4801 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 4802 if (new_state == NLP_STE_NPR_NODE) 4803 ndlp->nlp_flag &= ~NLP_RCV_PLOGI; 4804 4805 /* Reg/Unreg for FCP and NVME Transport interface */ 4806 if ((old_state == NLP_STE_MAPPED_NODE || 4807 old_state == NLP_STE_UNMAPPED_NODE)) { 4808 /* For nodes marked for ADISC, Handle unreg in ADISC cmpl 4809 * if linkup. In linkdown do unreg_node 4810 */ 4811 if (!(ndlp->nlp_flag & NLP_NPR_ADISC) || 4812 !lpfc_is_link_up(vport->phba)) 4813 lpfc_nlp_unreg_node(vport, ndlp); 4814 } 4815 4816 if (new_state == NLP_STE_MAPPED_NODE || 4817 new_state == NLP_STE_UNMAPPED_NODE) 4818 lpfc_nlp_reg_node(vport, ndlp); 4819 4820 if ((new_state == NLP_STE_MAPPED_NODE) && 4821 (vport->stat_data_enabled)) { 4822 /* 4823 * A new target is discovered, if there is no buffer for 4824 * statistical data collection allocate buffer. 4825 */ 4826 ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT, 4827 sizeof(struct lpfc_scsicmd_bkt), 4828 GFP_KERNEL); 4829 4830 if (!ndlp->lat_data) 4831 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 4832 "0286 lpfc_nlp_state_cleanup failed to " 4833 "allocate statistical data buffer DID " 4834 "0x%x\n", ndlp->nlp_DID); 4835 } 4836 /* 4837 * If the node just added to Mapped list was an FCP target, 4838 * but the remote port registration failed or assigned a target 4839 * id outside the presentable range - move the node to the 4840 * Unmapped List. 4841 */ 4842 if ((new_state == NLP_STE_MAPPED_NODE) && 4843 (ndlp->nlp_type & NLP_FCP_TARGET) && 4844 (!ndlp->rport || 4845 ndlp->rport->scsi_target_id == -1 || 4846 ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) { 4847 spin_lock_irq(&ndlp->lock); 4848 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID; 4849 spin_unlock_irq(&ndlp->lock); 4850 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 4851 } 4852 } 4853 4854 static char * 4855 lpfc_nlp_state_name(char *buffer, size_t size, int state) 4856 { 4857 static char *states[] = { 4858 [NLP_STE_UNUSED_NODE] = "UNUSED", 4859 [NLP_STE_PLOGI_ISSUE] = "PLOGI", 4860 [NLP_STE_ADISC_ISSUE] = "ADISC", 4861 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN", 4862 [NLP_STE_PRLI_ISSUE] = "PRLI", 4863 [NLP_STE_LOGO_ISSUE] = "LOGO", 4864 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED", 4865 [NLP_STE_MAPPED_NODE] = "MAPPED", 4866 [NLP_STE_NPR_NODE] = "NPR", 4867 }; 4868 4869 if (state < NLP_STE_MAX_STATE && states[state]) 4870 strlcpy(buffer, states[state], size); 4871 else 4872 snprintf(buffer, size, "unknown (%d)", state); 4873 return buffer; 4874 } 4875 4876 void 4877 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4878 int state) 4879 { 4880 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4881 int old_state = ndlp->nlp_state; 4882 int node_dropped = ndlp->nlp_flag & NLP_DROPPED; 4883 char name1[16], name2[16]; 4884 4885 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 4886 "0904 NPort state transition x%06x, %s -> %s\n", 4887 ndlp->nlp_DID, 4888 lpfc_nlp_state_name(name1, sizeof(name1), old_state), 4889 lpfc_nlp_state_name(name2, sizeof(name2), state)); 4890 4891 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, 4892 "node statechg did:x%x old:%d ste:%d", 4893 ndlp->nlp_DID, old_state, state); 4894 4895 if (node_dropped && old_state == NLP_STE_UNUSED_NODE && 4896 state != NLP_STE_UNUSED_NODE) { 4897 ndlp->nlp_flag &= ~NLP_DROPPED; 4898 lpfc_nlp_get(ndlp); 4899 } 4900 4901 if (old_state == NLP_STE_NPR_NODE && 4902 state != NLP_STE_NPR_NODE) 4903 lpfc_cancel_retry_delay_tmo(vport, ndlp); 4904 if (old_state == NLP_STE_UNMAPPED_NODE) { 4905 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID; 4906 ndlp->nlp_type &= ~NLP_FC_NODE; 4907 } 4908 4909 if (list_empty(&ndlp->nlp_listp)) { 4910 spin_lock_irq(shost->host_lock); 4911 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes); 4912 spin_unlock_irq(shost->host_lock); 4913 } else if (old_state) 4914 lpfc_nlp_counters(vport, old_state, -1); 4915 4916 ndlp->nlp_state = state; 4917 lpfc_nlp_counters(vport, state, 1); 4918 lpfc_nlp_state_cleanup(vport, ndlp, old_state, state); 4919 } 4920 4921 void 4922 lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4923 { 4924 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4925 4926 if (list_empty(&ndlp->nlp_listp)) { 4927 spin_lock_irq(shost->host_lock); 4928 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes); 4929 spin_unlock_irq(shost->host_lock); 4930 } 4931 } 4932 4933 void 4934 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4935 { 4936 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4937 4938 lpfc_cancel_retry_delay_tmo(vport, ndlp); 4939 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp)) 4940 lpfc_nlp_counters(vport, ndlp->nlp_state, -1); 4941 spin_lock_irq(shost->host_lock); 4942 list_del_init(&ndlp->nlp_listp); 4943 spin_unlock_irq(shost->host_lock); 4944 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state, 4945 NLP_STE_UNUSED_NODE); 4946 } 4947 4948 /** 4949 * lpfc_initialize_node - Initialize all fields of node object 4950 * @vport: Pointer to Virtual Port object. 4951 * @ndlp: Pointer to FC node object. 4952 * @did: FC_ID of the node. 4953 * 4954 * This function is always called when node object need to be initialized. 4955 * It initializes all the fields of the node object. Although the reference 4956 * to phba from @ndlp can be obtained indirectly through it's reference to 4957 * @vport, a direct reference to phba is taken here by @ndlp. This is due 4958 * to the life-span of the @ndlp might go beyond the existence of @vport as 4959 * the final release of ndlp is determined by its reference count. And, the 4960 * operation on @ndlp needs the reference to phba. 4961 **/ 4962 static inline void 4963 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 4964 uint32_t did) 4965 { 4966 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp); 4967 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp); 4968 timer_setup(&ndlp->nlp_delayfunc, lpfc_els_retry_delay, 0); 4969 INIT_LIST_HEAD(&ndlp->recovery_evt.evt_listp); 4970 4971 ndlp->nlp_DID = did; 4972 ndlp->vport = vport; 4973 ndlp->phba = vport->phba; 4974 ndlp->nlp_sid = NLP_NO_SID; 4975 ndlp->nlp_fc4_type = NLP_FC4_NONE; 4976 kref_init(&ndlp->kref); 4977 atomic_set(&ndlp->cmd_pending, 0); 4978 ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth; 4979 ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING; 4980 } 4981 4982 void 4983 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 4984 { 4985 /* 4986 * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should 4987 * be used if we wish to issue the "last" lpfc_nlp_put() to remove 4988 * the ndlp from the vport. The ndlp marked as UNUSED on the list 4989 * until ALL other outstanding threads have completed. We check 4990 * that the ndlp not already in the UNUSED state before we proceed. 4991 */ 4992 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 4993 return; 4994 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE); 4995 ndlp->nlp_flag |= NLP_DROPPED; 4996 if (vport->phba->sli_rev == LPFC_SLI_REV4) { 4997 lpfc_cleanup_vports_rrqs(vport, ndlp); 4998 lpfc_unreg_rpi(vport, ndlp); 4999 } 5000 5001 lpfc_nlp_put(ndlp); 5002 return; 5003 } 5004 5005 /* 5006 * Start / ReStart rescue timer for Discovery / RSCN handling 5007 */ 5008 void 5009 lpfc_set_disctmo(struct lpfc_vport *vport) 5010 { 5011 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5012 struct lpfc_hba *phba = vport->phba; 5013 uint32_t tmo; 5014 5015 if (vport->port_state == LPFC_LOCAL_CFG_LINK) { 5016 /* For FAN, timeout should be greater than edtov */ 5017 tmo = (((phba->fc_edtov + 999) / 1000) + 1); 5018 } else { 5019 /* Normal discovery timeout should be > than ELS/CT timeout 5020 * FC spec states we need 3 * ratov for CT requests 5021 */ 5022 tmo = ((phba->fc_ratov * 3) + 3); 5023 } 5024 5025 5026 if (!timer_pending(&vport->fc_disctmo)) { 5027 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 5028 "set disc timer: tmo:x%x state:x%x flg:x%x", 5029 tmo, vport->port_state, vport->fc_flag); 5030 } 5031 5032 mod_timer(&vport->fc_disctmo, jiffies + msecs_to_jiffies(1000 * tmo)); 5033 spin_lock_irq(shost->host_lock); 5034 vport->fc_flag |= FC_DISC_TMO; 5035 spin_unlock_irq(shost->host_lock); 5036 5037 /* Start Discovery Timer state <hba_state> */ 5038 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5039 "0247 Start Discovery Timer state x%x " 5040 "Data: x%x x%lx x%x x%x\n", 5041 vport->port_state, tmo, 5042 (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt, 5043 vport->fc_adisc_cnt); 5044 5045 return; 5046 } 5047 5048 /* 5049 * Cancel rescue timer for Discovery / RSCN handling 5050 */ 5051 int 5052 lpfc_can_disctmo(struct lpfc_vport *vport) 5053 { 5054 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5055 unsigned long iflags; 5056 5057 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 5058 "can disc timer: state:x%x rtry:x%x flg:x%x", 5059 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 5060 5061 /* Turn off discovery timer if its running */ 5062 if (vport->fc_flag & FC_DISC_TMO || 5063 timer_pending(&vport->fc_disctmo)) { 5064 spin_lock_irqsave(shost->host_lock, iflags); 5065 vport->fc_flag &= ~FC_DISC_TMO; 5066 spin_unlock_irqrestore(shost->host_lock, iflags); 5067 del_timer_sync(&vport->fc_disctmo); 5068 spin_lock_irqsave(&vport->work_port_lock, iflags); 5069 vport->work_port_events &= ~WORKER_DISC_TMO; 5070 spin_unlock_irqrestore(&vport->work_port_lock, iflags); 5071 } 5072 5073 /* Cancel Discovery Timer state <hba_state> */ 5074 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5075 "0248 Cancel Discovery Timer state x%x " 5076 "Data: x%x x%x x%x\n", 5077 vport->port_state, vport->fc_flag, 5078 vport->fc_plogi_cnt, vport->fc_adisc_cnt); 5079 return 0; 5080 } 5081 5082 /* 5083 * Check specified ring for outstanding IOCB on the SLI queue 5084 * Return true if iocb matches the specified nport 5085 */ 5086 int 5087 lpfc_check_sli_ndlp(struct lpfc_hba *phba, 5088 struct lpfc_sli_ring *pring, 5089 struct lpfc_iocbq *iocb, 5090 struct lpfc_nodelist *ndlp) 5091 { 5092 struct lpfc_vport *vport = ndlp->vport; 5093 u8 ulp_command; 5094 u16 ulp_context; 5095 u32 remote_id; 5096 5097 if (iocb->vport != vport) 5098 return 0; 5099 5100 ulp_command = get_job_cmnd(phba, iocb); 5101 ulp_context = get_job_ulpcontext(phba, iocb); 5102 remote_id = get_job_els_rsp64_did(phba, iocb); 5103 5104 if (pring->ringno == LPFC_ELS_RING) { 5105 switch (ulp_command) { 5106 case CMD_GEN_REQUEST64_CR: 5107 if (iocb->context_un.ndlp == ndlp) 5108 return 1; 5109 fallthrough; 5110 case CMD_ELS_REQUEST64_CR: 5111 if (remote_id == ndlp->nlp_DID) 5112 return 1; 5113 fallthrough; 5114 case CMD_XMIT_ELS_RSP64_CX: 5115 if (iocb->context1 == (uint8_t *) ndlp) 5116 return 1; 5117 } 5118 } else if (pring->ringno == LPFC_FCP_RING) { 5119 /* Skip match check if waiting to relogin to FCP target */ 5120 if ((ndlp->nlp_type & NLP_FCP_TARGET) && 5121 (ndlp->nlp_flag & NLP_DELAY_TMO)) { 5122 return 0; 5123 } 5124 if (ulp_context == ndlp->nlp_rpi) 5125 return 1; 5126 } 5127 return 0; 5128 } 5129 5130 static void 5131 __lpfc_dequeue_nport_iocbs(struct lpfc_hba *phba, 5132 struct lpfc_nodelist *ndlp, struct lpfc_sli_ring *pring, 5133 struct list_head *dequeue_list) 5134 { 5135 struct lpfc_iocbq *iocb, *next_iocb; 5136 5137 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) { 5138 /* Check to see if iocb matches the nport */ 5139 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) 5140 /* match, dequeue */ 5141 list_move_tail(&iocb->list, dequeue_list); 5142 } 5143 } 5144 5145 static void 5146 lpfc_sli3_dequeue_nport_iocbs(struct lpfc_hba *phba, 5147 struct lpfc_nodelist *ndlp, struct list_head *dequeue_list) 5148 { 5149 struct lpfc_sli *psli = &phba->sli; 5150 uint32_t i; 5151 5152 spin_lock_irq(&phba->hbalock); 5153 for (i = 0; i < psli->num_rings; i++) 5154 __lpfc_dequeue_nport_iocbs(phba, ndlp, &psli->sli3_ring[i], 5155 dequeue_list); 5156 spin_unlock_irq(&phba->hbalock); 5157 } 5158 5159 static void 5160 lpfc_sli4_dequeue_nport_iocbs(struct lpfc_hba *phba, 5161 struct lpfc_nodelist *ndlp, struct list_head *dequeue_list) 5162 { 5163 struct lpfc_sli_ring *pring; 5164 struct lpfc_queue *qp = NULL; 5165 5166 spin_lock_irq(&phba->hbalock); 5167 list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) { 5168 pring = qp->pring; 5169 if (!pring) 5170 continue; 5171 spin_lock(&pring->ring_lock); 5172 __lpfc_dequeue_nport_iocbs(phba, ndlp, pring, dequeue_list); 5173 spin_unlock(&pring->ring_lock); 5174 } 5175 spin_unlock_irq(&phba->hbalock); 5176 } 5177 5178 /* 5179 * Free resources / clean up outstanding I/Os 5180 * associated with nlp_rpi in the LPFC_NODELIST entry. 5181 */ 5182 static int 5183 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) 5184 { 5185 LIST_HEAD(completions); 5186 5187 lpfc_fabric_abort_nport(ndlp); 5188 5189 /* 5190 * Everything that matches on txcmplq will be returned 5191 * by firmware with a no rpi error. 5192 */ 5193 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) { 5194 if (phba->sli_rev != LPFC_SLI_REV4) 5195 lpfc_sli3_dequeue_nport_iocbs(phba, ndlp, &completions); 5196 else 5197 lpfc_sli4_dequeue_nport_iocbs(phba, ndlp, &completions); 5198 } 5199 5200 /* Cancel all the IOCBs from the completions list */ 5201 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, 5202 IOERR_SLI_ABORTED); 5203 5204 return 0; 5205 } 5206 5207 /** 5208 * lpfc_nlp_logo_unreg - Unreg mailbox completion handler before LOGO 5209 * @phba: Pointer to HBA context object. 5210 * @pmb: Pointer to mailbox object. 5211 * 5212 * This function will issue an ELS LOGO command after completing 5213 * the UNREG_RPI. 5214 **/ 5215 static void 5216 lpfc_nlp_logo_unreg(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 5217 { 5218 struct lpfc_vport *vport = pmb->vport; 5219 struct lpfc_nodelist *ndlp; 5220 5221 ndlp = (struct lpfc_nodelist *)(pmb->ctx_ndlp); 5222 if (!ndlp) 5223 return; 5224 lpfc_issue_els_logo(vport, ndlp, 0); 5225 mempool_free(pmb, phba->mbox_mem_pool); 5226 5227 /* Check to see if there are any deferred events to process */ 5228 if ((ndlp->nlp_flag & NLP_UNREG_INP) && 5229 (ndlp->nlp_defer_did != NLP_EVT_NOTHING_PENDING)) { 5230 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5231 "1434 UNREG cmpl deferred logo x%x " 5232 "on NPort x%x Data: x%x x%px\n", 5233 ndlp->nlp_rpi, ndlp->nlp_DID, 5234 ndlp->nlp_defer_did, ndlp); 5235 5236 ndlp->nlp_flag &= ~NLP_UNREG_INP; 5237 ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING; 5238 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0); 5239 } else { 5240 /* NLP_RELEASE_RPI is only set for SLI4 ports. */ 5241 if (ndlp->nlp_flag & NLP_RELEASE_RPI) { 5242 lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi); 5243 spin_lock_irq(&ndlp->lock); 5244 ndlp->nlp_flag &= ~NLP_RELEASE_RPI; 5245 ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR; 5246 spin_unlock_irq(&ndlp->lock); 5247 } 5248 spin_lock_irq(&ndlp->lock); 5249 ndlp->nlp_flag &= ~NLP_UNREG_INP; 5250 spin_unlock_irq(&ndlp->lock); 5251 } 5252 } 5253 5254 /* 5255 * Sets the mailbox completion handler to be used for the 5256 * unreg_rpi command. The handler varies based on the state of 5257 * the port and what will be happening to the rpi next. 5258 */ 5259 static void 5260 lpfc_set_unreg_login_mbx_cmpl(struct lpfc_hba *phba, struct lpfc_vport *vport, 5261 struct lpfc_nodelist *ndlp, LPFC_MBOXQ_t *mbox) 5262 { 5263 unsigned long iflags; 5264 5265 /* Driver always gets a reference on the mailbox job 5266 * in support of async jobs. 5267 */ 5268 mbox->ctx_ndlp = lpfc_nlp_get(ndlp); 5269 if (!mbox->ctx_ndlp) 5270 return; 5271 5272 if (ndlp->nlp_flag & NLP_ISSUE_LOGO) { 5273 mbox->mbox_cmpl = lpfc_nlp_logo_unreg; 5274 5275 } else if (phba->sli_rev == LPFC_SLI_REV4 && 5276 (!(vport->load_flag & FC_UNLOADING)) && 5277 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >= 5278 LPFC_SLI_INTF_IF_TYPE_2) && 5279 (kref_read(&ndlp->kref) > 0)) { 5280 mbox->mbox_cmpl = lpfc_sli4_unreg_rpi_cmpl_clr; 5281 } else { 5282 if (vport->load_flag & FC_UNLOADING) { 5283 if (phba->sli_rev == LPFC_SLI_REV4) { 5284 spin_lock_irqsave(&ndlp->lock, iflags); 5285 ndlp->nlp_flag |= NLP_RELEASE_RPI; 5286 spin_unlock_irqrestore(&ndlp->lock, iflags); 5287 } 5288 } 5289 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5290 } 5291 } 5292 5293 /* 5294 * Free rpi associated with LPFC_NODELIST entry. 5295 * This routine is called from lpfc_freenode(), when we are removing 5296 * a LPFC_NODELIST entry. It is also called if the driver initiates a 5297 * LOGO that completes successfully, and we are waiting to PLOGI back 5298 * to the remote NPort. In addition, it is called after we receive 5299 * and unsolicated ELS cmd, send back a rsp, the rsp completes and 5300 * we are waiting to PLOGI back to the remote NPort. 5301 */ 5302 int 5303 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 5304 { 5305 struct lpfc_hba *phba = vport->phba; 5306 LPFC_MBOXQ_t *mbox; 5307 int rc, acc_plogi = 1; 5308 uint16_t rpi; 5309 5310 if (ndlp->nlp_flag & NLP_RPI_REGISTERED || 5311 ndlp->nlp_flag & NLP_REG_LOGIN_SEND) { 5312 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND) 5313 lpfc_printf_vlog(vport, KERN_INFO, 5314 LOG_NODE | LOG_DISCOVERY, 5315 "3366 RPI x%x needs to be " 5316 "unregistered nlp_flag x%x " 5317 "did x%x\n", 5318 ndlp->nlp_rpi, ndlp->nlp_flag, 5319 ndlp->nlp_DID); 5320 5321 /* If there is already an UNREG in progress for this ndlp, 5322 * no need to queue up another one. 5323 */ 5324 if (ndlp->nlp_flag & NLP_UNREG_INP) { 5325 lpfc_printf_vlog(vport, KERN_INFO, 5326 LOG_NODE | LOG_DISCOVERY, 5327 "1436 unreg_rpi SKIP UNREG x%x on " 5328 "NPort x%x deferred x%x flg x%x " 5329 "Data: x%px\n", 5330 ndlp->nlp_rpi, ndlp->nlp_DID, 5331 ndlp->nlp_defer_did, 5332 ndlp->nlp_flag, ndlp); 5333 goto out; 5334 } 5335 5336 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5337 if (mbox) { 5338 /* SLI4 ports require the physical rpi value. */ 5339 rpi = ndlp->nlp_rpi; 5340 if (phba->sli_rev == LPFC_SLI_REV4) 5341 rpi = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]; 5342 5343 lpfc_unreg_login(phba, vport->vpi, rpi, mbox); 5344 mbox->vport = vport; 5345 lpfc_set_unreg_login_mbx_cmpl(phba, vport, ndlp, mbox); 5346 if (!mbox->ctx_ndlp) { 5347 mempool_free(mbox, phba->mbox_mem_pool); 5348 return 1; 5349 } 5350 5351 if (mbox->mbox_cmpl == lpfc_sli4_unreg_rpi_cmpl_clr) 5352 /* 5353 * accept PLOGIs after unreg_rpi_cmpl 5354 */ 5355 acc_plogi = 0; 5356 if (((ndlp->nlp_DID & Fabric_DID_MASK) != 5357 Fabric_DID_MASK) && 5358 (!(vport->fc_flag & FC_OFFLINE_MODE))) 5359 ndlp->nlp_flag |= NLP_UNREG_INP; 5360 5361 lpfc_printf_vlog(vport, KERN_INFO, 5362 LOG_NODE | LOG_DISCOVERY, 5363 "1433 unreg_rpi UNREG x%x on " 5364 "NPort x%x deferred flg x%x " 5365 "Data:x%px\n", 5366 ndlp->nlp_rpi, ndlp->nlp_DID, 5367 ndlp->nlp_flag, ndlp); 5368 5369 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 5370 if (rc == MBX_NOT_FINISHED) { 5371 ndlp->nlp_flag &= ~NLP_UNREG_INP; 5372 mempool_free(mbox, phba->mbox_mem_pool); 5373 acc_plogi = 1; 5374 } 5375 } else { 5376 lpfc_printf_vlog(vport, KERN_INFO, 5377 LOG_NODE | LOG_DISCOVERY, 5378 "1444 Failed to allocate mempool " 5379 "unreg_rpi UNREG x%x, " 5380 "DID x%x, flag x%x, " 5381 "ndlp x%px\n", 5382 ndlp->nlp_rpi, ndlp->nlp_DID, 5383 ndlp->nlp_flag, ndlp); 5384 5385 /* Because mempool_alloc failed, we 5386 * will issue a LOGO here and keep the rpi alive if 5387 * not unloading. 5388 */ 5389 if (!(vport->load_flag & FC_UNLOADING)) { 5390 ndlp->nlp_flag &= ~NLP_UNREG_INP; 5391 lpfc_issue_els_logo(vport, ndlp, 0); 5392 ndlp->nlp_prev_state = ndlp->nlp_state; 5393 lpfc_nlp_set_state(vport, ndlp, 5394 NLP_STE_NPR_NODE); 5395 } 5396 5397 return 1; 5398 } 5399 lpfc_no_rpi(phba, ndlp); 5400 out: 5401 if (phba->sli_rev != LPFC_SLI_REV4) 5402 ndlp->nlp_rpi = 0; 5403 ndlp->nlp_flag &= ~NLP_RPI_REGISTERED; 5404 ndlp->nlp_flag &= ~NLP_NPR_ADISC; 5405 if (acc_plogi) 5406 ndlp->nlp_flag &= ~NLP_LOGO_ACC; 5407 return 1; 5408 } 5409 ndlp->nlp_flag &= ~NLP_LOGO_ACC; 5410 return 0; 5411 } 5412 5413 /** 5414 * lpfc_unreg_hba_rpis - Unregister rpis registered to the hba. 5415 * @phba: pointer to lpfc hba data structure. 5416 * 5417 * This routine is invoked to unregister all the currently registered RPIs 5418 * to the HBA. 5419 **/ 5420 void 5421 lpfc_unreg_hba_rpis(struct lpfc_hba *phba) 5422 { 5423 struct lpfc_vport **vports; 5424 struct lpfc_nodelist *ndlp; 5425 struct Scsi_Host *shost; 5426 int i; 5427 5428 vports = lpfc_create_vport_work_array(phba); 5429 if (!vports) { 5430 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 5431 "2884 Vport array allocation failed \n"); 5432 return; 5433 } 5434 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 5435 shost = lpfc_shost_from_vport(vports[i]); 5436 spin_lock_irq(shost->host_lock); 5437 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) { 5438 if (ndlp->nlp_flag & NLP_RPI_REGISTERED) { 5439 /* The mempool_alloc might sleep */ 5440 spin_unlock_irq(shost->host_lock); 5441 lpfc_unreg_rpi(vports[i], ndlp); 5442 spin_lock_irq(shost->host_lock); 5443 } 5444 } 5445 spin_unlock_irq(shost->host_lock); 5446 } 5447 lpfc_destroy_vport_work_array(phba, vports); 5448 } 5449 5450 void 5451 lpfc_unreg_all_rpis(struct lpfc_vport *vport) 5452 { 5453 struct lpfc_hba *phba = vport->phba; 5454 LPFC_MBOXQ_t *mbox; 5455 int rc; 5456 5457 if (phba->sli_rev == LPFC_SLI_REV4) { 5458 lpfc_sli4_unreg_all_rpis(vport); 5459 return; 5460 } 5461 5462 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5463 if (mbox) { 5464 lpfc_unreg_login(phba, vport->vpi, LPFC_UNREG_ALL_RPIS_VPORT, 5465 mbox); 5466 mbox->vport = vport; 5467 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5468 mbox->ctx_ndlp = NULL; 5469 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); 5470 if (rc != MBX_TIMEOUT) 5471 mempool_free(mbox, phba->mbox_mem_pool); 5472 5473 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED)) 5474 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 5475 "1836 Could not issue " 5476 "unreg_login(all_rpis) status %d\n", 5477 rc); 5478 } 5479 } 5480 5481 void 5482 lpfc_unreg_default_rpis(struct lpfc_vport *vport) 5483 { 5484 struct lpfc_hba *phba = vport->phba; 5485 LPFC_MBOXQ_t *mbox; 5486 int rc; 5487 5488 /* Unreg DID is an SLI3 operation. */ 5489 if (phba->sli_rev > LPFC_SLI_REV3) 5490 return; 5491 5492 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5493 if (mbox) { 5494 lpfc_unreg_did(phba, vport->vpi, LPFC_UNREG_ALL_DFLT_RPIS, 5495 mbox); 5496 mbox->vport = vport; 5497 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5498 mbox->ctx_ndlp = NULL; 5499 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); 5500 if (rc != MBX_TIMEOUT) 5501 mempool_free(mbox, phba->mbox_mem_pool); 5502 5503 if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED)) 5504 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 5505 "1815 Could not issue " 5506 "unreg_did (default rpis) status %d\n", 5507 rc); 5508 } 5509 } 5510 5511 /* 5512 * Free resources associated with LPFC_NODELIST entry 5513 * so it can be freed. 5514 */ 5515 static int 5516 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 5517 { 5518 struct lpfc_hba *phba = vport->phba; 5519 LPFC_MBOXQ_t *mb, *nextmb; 5520 struct lpfc_dmabuf *mp; 5521 5522 /* Cleanup node for NPort <nlp_DID> */ 5523 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 5524 "0900 Cleanup node for NPort x%x " 5525 "Data: x%x x%x x%x\n", 5526 ndlp->nlp_DID, ndlp->nlp_flag, 5527 ndlp->nlp_state, ndlp->nlp_rpi); 5528 lpfc_dequeue_node(vport, ndlp); 5529 5530 /* Don't need to clean up REG_LOGIN64 cmds for Default RPI cleanup */ 5531 5532 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */ 5533 if ((mb = phba->sli.mbox_active)) { 5534 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) && 5535 !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) && 5536 (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) { 5537 mb->ctx_ndlp = NULL; 5538 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5539 } 5540 } 5541 5542 spin_lock_irq(&phba->hbalock); 5543 /* Cleanup REG_LOGIN completions which are not yet processed */ 5544 list_for_each_entry(mb, &phba->sli.mboxq_cmpl, list) { 5545 if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) || 5546 (mb->mbox_flag & LPFC_MBX_IMED_UNREG) || 5547 (ndlp != (struct lpfc_nodelist *)mb->ctx_ndlp)) 5548 continue; 5549 5550 mb->ctx_ndlp = NULL; 5551 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 5552 } 5553 5554 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) { 5555 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) && 5556 !(mb->mbox_flag & LPFC_MBX_IMED_UNREG) && 5557 (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) { 5558 mp = (struct lpfc_dmabuf *)(mb->ctx_buf); 5559 if (mp) { 5560 __lpfc_mbuf_free(phba, mp->virt, mp->phys); 5561 kfree(mp); 5562 } 5563 list_del(&mb->list); 5564 mempool_free(mb, phba->mbox_mem_pool); 5565 /* We shall not invoke the lpfc_nlp_put to decrement 5566 * the ndlp reference count as we are in the process 5567 * of lpfc_nlp_release. 5568 */ 5569 } 5570 } 5571 spin_unlock_irq(&phba->hbalock); 5572 5573 lpfc_els_abort(phba, ndlp); 5574 5575 spin_lock_irq(&ndlp->lock); 5576 ndlp->nlp_flag &= ~NLP_DELAY_TMO; 5577 spin_unlock_irq(&ndlp->lock); 5578 5579 ndlp->nlp_last_elscmd = 0; 5580 del_timer_sync(&ndlp->nlp_delayfunc); 5581 5582 list_del_init(&ndlp->els_retry_evt.evt_listp); 5583 list_del_init(&ndlp->dev_loss_evt.evt_listp); 5584 list_del_init(&ndlp->recovery_evt.evt_listp); 5585 lpfc_cleanup_vports_rrqs(vport, ndlp); 5586 5587 if (phba->sli_rev == LPFC_SLI_REV4) 5588 ndlp->nlp_flag |= NLP_RELEASE_RPI; 5589 5590 return 0; 5591 } 5592 5593 static int 5594 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 5595 uint32_t did) 5596 { 5597 D_ID mydid, ndlpdid, matchdid; 5598 5599 if (did == Bcast_DID) 5600 return 0; 5601 5602 /* First check for Direct match */ 5603 if (ndlp->nlp_DID == did) 5604 return 1; 5605 5606 /* Next check for area/domain identically equals 0 match */ 5607 mydid.un.word = vport->fc_myDID; 5608 if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) { 5609 return 0; 5610 } 5611 5612 matchdid.un.word = did; 5613 ndlpdid.un.word = ndlp->nlp_DID; 5614 if (matchdid.un.b.id == ndlpdid.un.b.id) { 5615 if ((mydid.un.b.domain == matchdid.un.b.domain) && 5616 (mydid.un.b.area == matchdid.un.b.area)) { 5617 /* This code is supposed to match the ID 5618 * for a private loop device that is 5619 * connect to fl_port. But we need to 5620 * check that the port did not just go 5621 * from pt2pt to fabric or we could end 5622 * up matching ndlp->nlp_DID 000001 to 5623 * fabric DID 0x20101 5624 */ 5625 if ((ndlpdid.un.b.domain == 0) && 5626 (ndlpdid.un.b.area == 0)) { 5627 if (ndlpdid.un.b.id && 5628 vport->phba->fc_topology == 5629 LPFC_TOPOLOGY_LOOP) 5630 return 1; 5631 } 5632 return 0; 5633 } 5634 5635 matchdid.un.word = ndlp->nlp_DID; 5636 if ((mydid.un.b.domain == ndlpdid.un.b.domain) && 5637 (mydid.un.b.area == ndlpdid.un.b.area)) { 5638 if ((matchdid.un.b.domain == 0) && 5639 (matchdid.un.b.area == 0)) { 5640 if (matchdid.un.b.id) 5641 return 1; 5642 } 5643 } 5644 } 5645 return 0; 5646 } 5647 5648 /* Search for a nodelist entry */ 5649 static struct lpfc_nodelist * 5650 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did) 5651 { 5652 struct lpfc_nodelist *ndlp; 5653 uint32_t data1; 5654 5655 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 5656 if (lpfc_matchdid(vport, ndlp, did)) { 5657 data1 = (((uint32_t)ndlp->nlp_state << 24) | 5658 ((uint32_t)ndlp->nlp_xri << 16) | 5659 ((uint32_t)ndlp->nlp_type << 8) 5660 ); 5661 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 5662 "0929 FIND node DID " 5663 "Data: x%px x%x x%x x%x x%x x%px\n", 5664 ndlp, ndlp->nlp_DID, 5665 ndlp->nlp_flag, data1, ndlp->nlp_rpi, 5666 ndlp->active_rrqs_xri_bitmap); 5667 return ndlp; 5668 } 5669 } 5670 5671 /* FIND node did <did> NOT FOUND */ 5672 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 5673 "0932 FIND node did x%x NOT FOUND.\n", did); 5674 return NULL; 5675 } 5676 5677 struct lpfc_nodelist * 5678 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did) 5679 { 5680 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5681 struct lpfc_nodelist *ndlp; 5682 unsigned long iflags; 5683 5684 spin_lock_irqsave(shost->host_lock, iflags); 5685 ndlp = __lpfc_findnode_did(vport, did); 5686 spin_unlock_irqrestore(shost->host_lock, iflags); 5687 return ndlp; 5688 } 5689 5690 struct lpfc_nodelist * 5691 lpfc_findnode_mapped(struct lpfc_vport *vport) 5692 { 5693 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5694 struct lpfc_nodelist *ndlp; 5695 uint32_t data1; 5696 unsigned long iflags; 5697 5698 spin_lock_irqsave(shost->host_lock, iflags); 5699 5700 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 5701 if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE || 5702 ndlp->nlp_state == NLP_STE_MAPPED_NODE) { 5703 data1 = (((uint32_t)ndlp->nlp_state << 24) | 5704 ((uint32_t)ndlp->nlp_xri << 16) | 5705 ((uint32_t)ndlp->nlp_type << 8) | 5706 ((uint32_t)ndlp->nlp_rpi & 0xff)); 5707 spin_unlock_irqrestore(shost->host_lock, iflags); 5708 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 5709 "2025 FIND node DID " 5710 "Data: x%px x%x x%x x%x x%px\n", 5711 ndlp, ndlp->nlp_DID, 5712 ndlp->nlp_flag, data1, 5713 ndlp->active_rrqs_xri_bitmap); 5714 return ndlp; 5715 } 5716 } 5717 spin_unlock_irqrestore(shost->host_lock, iflags); 5718 5719 /* FIND node did <did> NOT FOUND */ 5720 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 5721 "2026 FIND mapped did NOT FOUND.\n"); 5722 return NULL; 5723 } 5724 5725 struct lpfc_nodelist * 5726 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did) 5727 { 5728 struct lpfc_nodelist *ndlp; 5729 5730 ndlp = lpfc_findnode_did(vport, did); 5731 if (!ndlp) { 5732 if (vport->phba->nvmet_support) 5733 return NULL; 5734 if ((vport->fc_flag & FC_RSCN_MODE) != 0 && 5735 lpfc_rscn_payload_check(vport, did) == 0) 5736 return NULL; 5737 ndlp = lpfc_nlp_init(vport, did); 5738 if (!ndlp) 5739 return NULL; 5740 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 5741 5742 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5743 "6453 Setup New Node 2B_DISC x%x " 5744 "Data:x%x x%x x%x\n", 5745 ndlp->nlp_DID, ndlp->nlp_flag, 5746 ndlp->nlp_state, vport->fc_flag); 5747 5748 spin_lock_irq(&ndlp->lock); 5749 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 5750 spin_unlock_irq(&ndlp->lock); 5751 return ndlp; 5752 } 5753 5754 /* The NVME Target does not want to actively manage an rport. 5755 * The goal is to allow the target to reset its state and clear 5756 * pending IO in preparation for the initiator to recover. 5757 */ 5758 if ((vport->fc_flag & FC_RSCN_MODE) && 5759 !(vport->fc_flag & FC_NDISC_ACTIVE)) { 5760 if (lpfc_rscn_payload_check(vport, did)) { 5761 5762 /* Since this node is marked for discovery, 5763 * delay timeout is not needed. 5764 */ 5765 lpfc_cancel_retry_delay_tmo(vport, ndlp); 5766 5767 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5768 "6455 Setup RSCN Node 2B_DISC x%x " 5769 "Data:x%x x%x x%x\n", 5770 ndlp->nlp_DID, ndlp->nlp_flag, 5771 ndlp->nlp_state, vport->fc_flag); 5772 5773 /* NVME Target mode waits until rport is known to be 5774 * impacted by the RSCN before it transitions. No 5775 * active management - just go to NPR provided the 5776 * node had a valid login. 5777 */ 5778 if (vport->phba->nvmet_support) 5779 return ndlp; 5780 5781 /* If we've already received a PLOGI from this NPort 5782 * we don't need to try to discover it again. 5783 */ 5784 if (ndlp->nlp_flag & NLP_RCV_PLOGI && 5785 !(ndlp->nlp_type & 5786 (NLP_FCP_TARGET | NLP_NVME_TARGET))) 5787 return NULL; 5788 5789 ndlp->nlp_prev_state = ndlp->nlp_state; 5790 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 5791 5792 spin_lock_irq(&ndlp->lock); 5793 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 5794 spin_unlock_irq(&ndlp->lock); 5795 } else { 5796 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5797 "6456 Skip Setup RSCN Node x%x " 5798 "Data:x%x x%x x%x\n", 5799 ndlp->nlp_DID, ndlp->nlp_flag, 5800 ndlp->nlp_state, vport->fc_flag); 5801 ndlp = NULL; 5802 } 5803 } else { 5804 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5805 "6457 Setup Active Node 2B_DISC x%x " 5806 "Data:x%x x%x x%x\n", 5807 ndlp->nlp_DID, ndlp->nlp_flag, 5808 ndlp->nlp_state, vport->fc_flag); 5809 5810 /* If the initiator received a PLOGI from this NPort or if the 5811 * initiator is already in the process of discovery on it, 5812 * there's no need to try to discover it again. 5813 */ 5814 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE || 5815 ndlp->nlp_state == NLP_STE_PLOGI_ISSUE || 5816 (!vport->phba->nvmet_support && 5817 ndlp->nlp_flag & NLP_RCV_PLOGI)) 5818 return NULL; 5819 5820 if (vport->phba->nvmet_support) 5821 return ndlp; 5822 5823 /* Moving to NPR state clears unsolicited flags and 5824 * allows for rediscovery 5825 */ 5826 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 5827 5828 spin_lock_irq(&ndlp->lock); 5829 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 5830 spin_unlock_irq(&ndlp->lock); 5831 } 5832 return ndlp; 5833 } 5834 5835 /* Build a list of nodes to discover based on the loopmap */ 5836 void 5837 lpfc_disc_list_loopmap(struct lpfc_vport *vport) 5838 { 5839 struct lpfc_hba *phba = vport->phba; 5840 int j; 5841 uint32_t alpa, index; 5842 5843 if (!lpfc_is_link_up(phba)) 5844 return; 5845 5846 if (phba->fc_topology != LPFC_TOPOLOGY_LOOP) 5847 return; 5848 5849 /* Check for loop map present or not */ 5850 if (phba->alpa_map[0]) { 5851 for (j = 1; j <= phba->alpa_map[0]; j++) { 5852 alpa = phba->alpa_map[j]; 5853 if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0)) 5854 continue; 5855 lpfc_setup_disc_node(vport, alpa); 5856 } 5857 } else { 5858 /* No alpamap, so try all alpa's */ 5859 for (j = 0; j < FC_MAXLOOP; j++) { 5860 /* If cfg_scan_down is set, start from highest 5861 * ALPA (0xef) to lowest (0x1). 5862 */ 5863 if (vport->cfg_scan_down) 5864 index = j; 5865 else 5866 index = FC_MAXLOOP - j - 1; 5867 alpa = lpfcAlpaArray[index]; 5868 if ((vport->fc_myDID & 0xff) == alpa) 5869 continue; 5870 lpfc_setup_disc_node(vport, alpa); 5871 } 5872 } 5873 return; 5874 } 5875 5876 /* SLI3 only */ 5877 void 5878 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport) 5879 { 5880 LPFC_MBOXQ_t *mbox; 5881 struct lpfc_sli *psli = &phba->sli; 5882 struct lpfc_sli_ring *extra_ring = &psli->sli3_ring[LPFC_EXTRA_RING]; 5883 struct lpfc_sli_ring *fcp_ring = &psli->sli3_ring[LPFC_FCP_RING]; 5884 int rc; 5885 5886 /* 5887 * if it's not a physical port or if we already send 5888 * clear_la then don't send it. 5889 */ 5890 if ((phba->link_state >= LPFC_CLEAR_LA) || 5891 (vport->port_type != LPFC_PHYSICAL_PORT) || 5892 (phba->sli_rev == LPFC_SLI_REV4)) 5893 return; 5894 5895 /* Link up discovery */ 5896 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) { 5897 phba->link_state = LPFC_CLEAR_LA; 5898 lpfc_clear_la(phba, mbox); 5899 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la; 5900 mbox->vport = vport; 5901 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 5902 if (rc == MBX_NOT_FINISHED) { 5903 mempool_free(mbox, phba->mbox_mem_pool); 5904 lpfc_disc_flush_list(vport); 5905 extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT; 5906 fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT; 5907 phba->link_state = LPFC_HBA_ERROR; 5908 } 5909 } 5910 } 5911 5912 /* Reg_vpi to tell firmware to resume normal operations */ 5913 void 5914 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport) 5915 { 5916 LPFC_MBOXQ_t *regvpimbox; 5917 5918 regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 5919 if (regvpimbox) { 5920 lpfc_reg_vpi(vport, regvpimbox); 5921 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi; 5922 regvpimbox->vport = vport; 5923 if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT) 5924 == MBX_NOT_FINISHED) { 5925 mempool_free(regvpimbox, phba->mbox_mem_pool); 5926 } 5927 } 5928 } 5929 5930 /* Start Link up / RSCN discovery on NPR nodes */ 5931 void 5932 lpfc_disc_start(struct lpfc_vport *vport) 5933 { 5934 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 5935 struct lpfc_hba *phba = vport->phba; 5936 uint32_t num_sent; 5937 uint32_t clear_la_pending; 5938 5939 if (!lpfc_is_link_up(phba)) { 5940 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI, 5941 "3315 Link is not up %x\n", 5942 phba->link_state); 5943 return; 5944 } 5945 5946 if (phba->link_state == LPFC_CLEAR_LA) 5947 clear_la_pending = 1; 5948 else 5949 clear_la_pending = 0; 5950 5951 if (vport->port_state < LPFC_VPORT_READY) 5952 vport->port_state = LPFC_DISC_AUTH; 5953 5954 lpfc_set_disctmo(vport); 5955 5956 vport->fc_prevDID = vport->fc_myDID; 5957 vport->num_disc_nodes = 0; 5958 5959 /* Start Discovery state <hba_state> */ 5960 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 5961 "0202 Start Discovery port state x%x " 5962 "flg x%x Data: x%x x%x x%x\n", 5963 vport->port_state, vport->fc_flag, vport->fc_plogi_cnt, 5964 vport->fc_adisc_cnt, vport->fc_npr_cnt); 5965 5966 /* First do ADISCs - if any */ 5967 num_sent = lpfc_els_disc_adisc(vport); 5968 5969 if (num_sent) 5970 return; 5971 5972 /* Register the VPI for SLI3, NPIV only. */ 5973 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 5974 !(vport->fc_flag & FC_PT2PT) && 5975 !(vport->fc_flag & FC_RSCN_MODE) && 5976 (phba->sli_rev < LPFC_SLI_REV4)) { 5977 lpfc_issue_clear_la(phba, vport); 5978 lpfc_issue_reg_vpi(phba, vport); 5979 return; 5980 } 5981 5982 /* 5983 * For SLI2, we need to set port_state to READY and continue 5984 * discovery. 5985 */ 5986 if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) { 5987 /* If we get here, there is nothing to ADISC */ 5988 lpfc_issue_clear_la(phba, vport); 5989 5990 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) { 5991 vport->num_disc_nodes = 0; 5992 /* go thru NPR nodes and issue ELS PLOGIs */ 5993 if (vport->fc_npr_cnt) 5994 lpfc_els_disc_plogi(vport); 5995 5996 if (!vport->num_disc_nodes) { 5997 spin_lock_irq(shost->host_lock); 5998 vport->fc_flag &= ~FC_NDISC_ACTIVE; 5999 spin_unlock_irq(shost->host_lock); 6000 lpfc_can_disctmo(vport); 6001 } 6002 } 6003 vport->port_state = LPFC_VPORT_READY; 6004 } else { 6005 /* Next do PLOGIs - if any */ 6006 num_sent = lpfc_els_disc_plogi(vport); 6007 6008 if (num_sent) 6009 return; 6010 6011 if (vport->fc_flag & FC_RSCN_MODE) { 6012 /* Check to see if more RSCNs came in while we 6013 * were processing this one. 6014 */ 6015 if ((vport->fc_rscn_id_cnt == 0) && 6016 (!(vport->fc_flag & FC_RSCN_DISCOVERY))) { 6017 spin_lock_irq(shost->host_lock); 6018 vport->fc_flag &= ~FC_RSCN_MODE; 6019 spin_unlock_irq(shost->host_lock); 6020 lpfc_can_disctmo(vport); 6021 } else 6022 lpfc_els_handle_rscn(vport); 6023 } 6024 } 6025 return; 6026 } 6027 6028 /* 6029 * Ignore completion for all IOCBs on tx and txcmpl queue for ELS 6030 * ring the match the sppecified nodelist. 6031 */ 6032 static void 6033 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) 6034 { 6035 LIST_HEAD(completions); 6036 struct lpfc_iocbq *iocb, *next_iocb; 6037 struct lpfc_sli_ring *pring; 6038 u32 ulp_command; 6039 6040 pring = lpfc_phba_elsring(phba); 6041 if (unlikely(!pring)) 6042 return; 6043 6044 /* Error matching iocb on txq or txcmplq 6045 * First check the txq. 6046 */ 6047 spin_lock_irq(&phba->hbalock); 6048 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) { 6049 if (iocb->context1 != ndlp) 6050 continue; 6051 6052 ulp_command = get_job_cmnd(phba, iocb); 6053 6054 if (ulp_command == CMD_ELS_REQUEST64_CR || 6055 ulp_command == CMD_XMIT_ELS_RSP64_CX) { 6056 6057 list_move_tail(&iocb->list, &completions); 6058 } 6059 } 6060 6061 /* Next check the txcmplq */ 6062 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) { 6063 if (iocb->context1 != ndlp) 6064 continue; 6065 6066 ulp_command = get_job_cmnd(phba, iocb); 6067 6068 if (ulp_command == CMD_ELS_REQUEST64_CR || 6069 ulp_command == CMD_XMIT_ELS_RSP64_CX) { 6070 lpfc_sli_issue_abort_iotag(phba, pring, iocb, NULL); 6071 } 6072 } 6073 spin_unlock_irq(&phba->hbalock); 6074 6075 /* Make sure HBA is alive */ 6076 lpfc_issue_hb_tmo(phba); 6077 6078 /* Cancel all the IOCBs from the completions list */ 6079 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, 6080 IOERR_SLI_ABORTED); 6081 } 6082 6083 static void 6084 lpfc_disc_flush_list(struct lpfc_vport *vport) 6085 { 6086 struct lpfc_nodelist *ndlp, *next_ndlp; 6087 struct lpfc_hba *phba = vport->phba; 6088 6089 if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) { 6090 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, 6091 nlp_listp) { 6092 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE || 6093 ndlp->nlp_state == NLP_STE_ADISC_ISSUE) { 6094 lpfc_free_tx(phba, ndlp); 6095 } 6096 } 6097 } 6098 } 6099 6100 void 6101 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport) 6102 { 6103 lpfc_els_flush_rscn(vport); 6104 lpfc_els_flush_cmd(vport); 6105 lpfc_disc_flush_list(vport); 6106 } 6107 6108 /*****************************************************************************/ 6109 /* 6110 * NAME: lpfc_disc_timeout 6111 * 6112 * FUNCTION: Fibre Channel driver discovery timeout routine. 6113 * 6114 * EXECUTION ENVIRONMENT: interrupt only 6115 * 6116 * CALLED FROM: 6117 * Timer function 6118 * 6119 * RETURNS: 6120 * none 6121 */ 6122 /*****************************************************************************/ 6123 void 6124 lpfc_disc_timeout(struct timer_list *t) 6125 { 6126 struct lpfc_vport *vport = from_timer(vport, t, fc_disctmo); 6127 struct lpfc_hba *phba = vport->phba; 6128 uint32_t tmo_posted; 6129 unsigned long flags = 0; 6130 6131 if (unlikely(!phba)) 6132 return; 6133 6134 spin_lock_irqsave(&vport->work_port_lock, flags); 6135 tmo_posted = vport->work_port_events & WORKER_DISC_TMO; 6136 if (!tmo_posted) 6137 vport->work_port_events |= WORKER_DISC_TMO; 6138 spin_unlock_irqrestore(&vport->work_port_lock, flags); 6139 6140 if (!tmo_posted) 6141 lpfc_worker_wake_up(phba); 6142 return; 6143 } 6144 6145 static void 6146 lpfc_disc_timeout_handler(struct lpfc_vport *vport) 6147 { 6148 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 6149 struct lpfc_hba *phba = vport->phba; 6150 struct lpfc_sli *psli = &phba->sli; 6151 struct lpfc_nodelist *ndlp, *next_ndlp; 6152 LPFC_MBOXQ_t *initlinkmbox; 6153 int rc, clrlaerr = 0; 6154 6155 if (!(vport->fc_flag & FC_DISC_TMO)) 6156 return; 6157 6158 spin_lock_irq(shost->host_lock); 6159 vport->fc_flag &= ~FC_DISC_TMO; 6160 spin_unlock_irq(shost->host_lock); 6161 6162 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 6163 "disc timeout: state:x%x rtry:x%x flg:x%x", 6164 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 6165 6166 switch (vport->port_state) { 6167 6168 case LPFC_LOCAL_CFG_LINK: 6169 /* 6170 * port_state is identically LPFC_LOCAL_CFG_LINK while 6171 * waiting for FAN timeout 6172 */ 6173 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY, 6174 "0221 FAN timeout\n"); 6175 6176 /* Start discovery by sending FLOGI, clean up old rpis */ 6177 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, 6178 nlp_listp) { 6179 if (ndlp->nlp_state != NLP_STE_NPR_NODE) 6180 continue; 6181 if (ndlp->nlp_type & NLP_FABRIC) { 6182 /* Clean up the ndlp on Fabric connections */ 6183 lpfc_drop_node(vport, ndlp); 6184 6185 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) { 6186 /* Fail outstanding IO now since device 6187 * is marked for PLOGI. 6188 */ 6189 lpfc_unreg_rpi(vport, ndlp); 6190 } 6191 } 6192 if (vport->port_state != LPFC_FLOGI) { 6193 if (phba->sli_rev <= LPFC_SLI_REV3) 6194 lpfc_initial_flogi(vport); 6195 else 6196 lpfc_issue_init_vfi(vport); 6197 return; 6198 } 6199 break; 6200 6201 case LPFC_FDISC: 6202 case LPFC_FLOGI: 6203 /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */ 6204 /* Initial FLOGI timeout */ 6205 lpfc_printf_vlog(vport, KERN_ERR, 6206 LOG_TRACE_EVENT, 6207 "0222 Initial %s timeout\n", 6208 vport->vpi ? "FDISC" : "FLOGI"); 6209 6210 /* Assume no Fabric and go on with discovery. 6211 * Check for outstanding ELS FLOGI to abort. 6212 */ 6213 6214 /* FLOGI failed, so just use loop map to make discovery list */ 6215 lpfc_disc_list_loopmap(vport); 6216 6217 /* Start discovery */ 6218 lpfc_disc_start(vport); 6219 break; 6220 6221 case LPFC_FABRIC_CFG_LINK: 6222 /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for 6223 NameServer login */ 6224 lpfc_printf_vlog(vport, KERN_ERR, 6225 LOG_TRACE_EVENT, 6226 "0223 Timeout while waiting for " 6227 "NameServer login\n"); 6228 /* Next look for NameServer ndlp */ 6229 ndlp = lpfc_findnode_did(vport, NameServer_DID); 6230 if (ndlp) 6231 lpfc_els_abort(phba, ndlp); 6232 6233 /* ReStart discovery */ 6234 goto restart_disc; 6235 6236 case LPFC_NS_QRY: 6237 /* Check for wait for NameServer Rsp timeout */ 6238 lpfc_printf_vlog(vport, KERN_ERR, 6239 LOG_TRACE_EVENT, 6240 "0224 NameServer Query timeout " 6241 "Data: x%x x%x\n", 6242 vport->fc_ns_retry, LPFC_MAX_NS_RETRY); 6243 6244 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) { 6245 /* Try it one more time */ 6246 vport->fc_ns_retry++; 6247 vport->gidft_inp = 0; 6248 rc = lpfc_issue_gidft(vport); 6249 if (rc == 0) 6250 break; 6251 } 6252 vport->fc_ns_retry = 0; 6253 6254 restart_disc: 6255 /* 6256 * Discovery is over. 6257 * set port_state to PORT_READY if SLI2. 6258 * cmpl_reg_vpi will set port_state to READY for SLI3. 6259 */ 6260 if (phba->sli_rev < LPFC_SLI_REV4) { 6261 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) 6262 lpfc_issue_reg_vpi(phba, vport); 6263 else { 6264 lpfc_issue_clear_la(phba, vport); 6265 vport->port_state = LPFC_VPORT_READY; 6266 } 6267 } 6268 6269 /* Setup and issue mailbox INITIALIZE LINK command */ 6270 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 6271 if (!initlinkmbox) { 6272 lpfc_printf_vlog(vport, KERN_ERR, 6273 LOG_TRACE_EVENT, 6274 "0206 Device Discovery " 6275 "completion error\n"); 6276 phba->link_state = LPFC_HBA_ERROR; 6277 break; 6278 } 6279 6280 lpfc_linkdown(phba); 6281 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology, 6282 phba->cfg_link_speed); 6283 initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0; 6284 initlinkmbox->vport = vport; 6285 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 6286 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT); 6287 lpfc_set_loopback_flag(phba); 6288 if (rc == MBX_NOT_FINISHED) 6289 mempool_free(initlinkmbox, phba->mbox_mem_pool); 6290 6291 break; 6292 6293 case LPFC_DISC_AUTH: 6294 /* Node Authentication timeout */ 6295 lpfc_printf_vlog(vport, KERN_ERR, 6296 LOG_TRACE_EVENT, 6297 "0227 Node Authentication timeout\n"); 6298 lpfc_disc_flush_list(vport); 6299 6300 /* 6301 * set port_state to PORT_READY if SLI2. 6302 * cmpl_reg_vpi will set port_state to READY for SLI3. 6303 */ 6304 if (phba->sli_rev < LPFC_SLI_REV4) { 6305 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) 6306 lpfc_issue_reg_vpi(phba, vport); 6307 else { /* NPIV Not enabled */ 6308 lpfc_issue_clear_la(phba, vport); 6309 vport->port_state = LPFC_VPORT_READY; 6310 } 6311 } 6312 break; 6313 6314 case LPFC_VPORT_READY: 6315 if (vport->fc_flag & FC_RSCN_MODE) { 6316 lpfc_printf_vlog(vport, KERN_ERR, 6317 LOG_TRACE_EVENT, 6318 "0231 RSCN timeout Data: x%x " 6319 "x%x\n", 6320 vport->fc_ns_retry, LPFC_MAX_NS_RETRY); 6321 6322 /* Cleanup any outstanding ELS commands */ 6323 lpfc_els_flush_cmd(vport); 6324 6325 lpfc_els_flush_rscn(vport); 6326 lpfc_disc_flush_list(vport); 6327 } 6328 break; 6329 6330 default: 6331 lpfc_printf_vlog(vport, KERN_ERR, 6332 LOG_TRACE_EVENT, 6333 "0273 Unexpected discovery timeout, " 6334 "vport State x%x\n", vport->port_state); 6335 break; 6336 } 6337 6338 switch (phba->link_state) { 6339 case LPFC_CLEAR_LA: 6340 /* CLEAR LA timeout */ 6341 lpfc_printf_vlog(vport, KERN_ERR, 6342 LOG_TRACE_EVENT, 6343 "0228 CLEAR LA timeout\n"); 6344 clrlaerr = 1; 6345 break; 6346 6347 case LPFC_LINK_UP: 6348 lpfc_issue_clear_la(phba, vport); 6349 fallthrough; 6350 case LPFC_LINK_UNKNOWN: 6351 case LPFC_WARM_START: 6352 case LPFC_INIT_START: 6353 case LPFC_INIT_MBX_CMDS: 6354 case LPFC_LINK_DOWN: 6355 case LPFC_HBA_ERROR: 6356 lpfc_printf_vlog(vport, KERN_ERR, 6357 LOG_TRACE_EVENT, 6358 "0230 Unexpected timeout, hba link " 6359 "state x%x\n", phba->link_state); 6360 clrlaerr = 1; 6361 break; 6362 6363 case LPFC_HBA_READY: 6364 break; 6365 } 6366 6367 if (clrlaerr) { 6368 lpfc_disc_flush_list(vport); 6369 if (phba->sli_rev != LPFC_SLI_REV4) { 6370 psli->sli3_ring[(LPFC_EXTRA_RING)].flag &= 6371 ~LPFC_STOP_IOCB_EVENT; 6372 psli->sli3_ring[LPFC_FCP_RING].flag &= 6373 ~LPFC_STOP_IOCB_EVENT; 6374 } 6375 vport->port_state = LPFC_VPORT_READY; 6376 } 6377 return; 6378 } 6379 6380 /* 6381 * This routine handles processing a NameServer REG_LOGIN mailbox 6382 * command upon completion. It is setup in the LPFC_MBOXQ 6383 * as the completion routine when the command is 6384 * handed off to the SLI layer. 6385 */ 6386 void 6387 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 6388 { 6389 MAILBOX_t *mb = &pmb->u.mb; 6390 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf); 6391 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; 6392 struct lpfc_vport *vport = pmb->vport; 6393 6394 pmb->ctx_buf = NULL; 6395 pmb->ctx_ndlp = NULL; 6396 6397 if (phba->sli_rev < LPFC_SLI_REV4) 6398 ndlp->nlp_rpi = mb->un.varWords[0]; 6399 ndlp->nlp_flag |= NLP_RPI_REGISTERED; 6400 ndlp->nlp_type |= NLP_FABRIC; 6401 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 6402 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY, 6403 "0004 rpi:%x DID:%x flg:%x %d x%px\n", 6404 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag, 6405 kref_read(&ndlp->kref), 6406 ndlp); 6407 /* 6408 * Start issuing Fabric-Device Management Interface (FDMI) command to 6409 * 0xfffffa (FDMI well known port). 6410 * DHBA -> DPRT -> RHBA -> RPA (physical port) 6411 * DPRT -> RPRT (vports) 6412 */ 6413 if (vport->port_type == LPFC_PHYSICAL_PORT) { 6414 phba->link_flag &= ~LS_CT_VEN_RPA; /* For extra Vendor RPA */ 6415 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA, 0); 6416 } else { 6417 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DPRT, 0); 6418 } 6419 6420 6421 /* decrement the node reference count held for this callback 6422 * function. 6423 */ 6424 lpfc_nlp_put(ndlp); 6425 lpfc_mbuf_free(phba, mp->virt, mp->phys); 6426 kfree(mp); 6427 mempool_free(pmb, phba->mbox_mem_pool); 6428 6429 return; 6430 } 6431 6432 static int 6433 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param) 6434 { 6435 uint16_t *rpi = param; 6436 6437 return ndlp->nlp_rpi == *rpi; 6438 } 6439 6440 static int 6441 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param) 6442 { 6443 return memcmp(&ndlp->nlp_portname, param, 6444 sizeof(ndlp->nlp_portname)) == 0; 6445 } 6446 6447 static struct lpfc_nodelist * 6448 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param) 6449 { 6450 struct lpfc_nodelist *ndlp; 6451 6452 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 6453 if (filter(ndlp, param)) { 6454 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 6455 "3185 FIND node filter %ps DID " 6456 "ndlp x%px did x%x flg x%x st x%x " 6457 "xri x%x type x%x rpi x%x\n", 6458 filter, ndlp, ndlp->nlp_DID, 6459 ndlp->nlp_flag, ndlp->nlp_state, 6460 ndlp->nlp_xri, ndlp->nlp_type, 6461 ndlp->nlp_rpi); 6462 return ndlp; 6463 } 6464 } 6465 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 6466 "3186 FIND node filter %ps NOT FOUND.\n", filter); 6467 return NULL; 6468 } 6469 6470 /* 6471 * This routine looks up the ndlp lists for the given RPI. If rpi found it 6472 * returns the node list element pointer else return NULL. 6473 */ 6474 struct lpfc_nodelist * 6475 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi) 6476 { 6477 return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi); 6478 } 6479 6480 /* 6481 * This routine looks up the ndlp lists for the given WWPN. If WWPN found it 6482 * returns the node element list pointer else return NULL. 6483 */ 6484 struct lpfc_nodelist * 6485 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn) 6486 { 6487 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 6488 struct lpfc_nodelist *ndlp; 6489 6490 spin_lock_irq(shost->host_lock); 6491 ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn); 6492 spin_unlock_irq(shost->host_lock); 6493 return ndlp; 6494 } 6495 6496 /* 6497 * This routine looks up the ndlp lists for the given RPI. If the rpi 6498 * is found, the routine returns the node element list pointer else 6499 * return NULL. 6500 */ 6501 struct lpfc_nodelist * 6502 lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi) 6503 { 6504 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 6505 struct lpfc_nodelist *ndlp; 6506 unsigned long flags; 6507 6508 spin_lock_irqsave(shost->host_lock, flags); 6509 ndlp = __lpfc_findnode_rpi(vport, rpi); 6510 spin_unlock_irqrestore(shost->host_lock, flags); 6511 return ndlp; 6512 } 6513 6514 /** 6515 * lpfc_find_vport_by_vpid - Find a vport on a HBA through vport identifier 6516 * @phba: pointer to lpfc hba data structure. 6517 * @vpi: the physical host virtual N_Port identifier. 6518 * 6519 * This routine finds a vport on a HBA (referred by @phba) through a 6520 * @vpi. The function walks the HBA's vport list and returns the address 6521 * of the vport with the matching @vpi. 6522 * 6523 * Return code 6524 * NULL - No vport with the matching @vpi found 6525 * Otherwise - Address to the vport with the matching @vpi. 6526 **/ 6527 struct lpfc_vport * 6528 lpfc_find_vport_by_vpid(struct lpfc_hba *phba, uint16_t vpi) 6529 { 6530 struct lpfc_vport *vport; 6531 unsigned long flags; 6532 int i = 0; 6533 6534 /* The physical ports are always vpi 0 - translate is unnecessary. */ 6535 if (vpi > 0) { 6536 /* 6537 * Translate the physical vpi to the logical vpi. The 6538 * vport stores the logical vpi. 6539 */ 6540 for (i = 0; i <= phba->max_vpi; i++) { 6541 if (vpi == phba->vpi_ids[i]) 6542 break; 6543 } 6544 6545 if (i > phba->max_vpi) { 6546 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6547 "2936 Could not find Vport mapped " 6548 "to vpi %d\n", vpi); 6549 return NULL; 6550 } 6551 } 6552 6553 spin_lock_irqsave(&phba->port_list_lock, flags); 6554 list_for_each_entry(vport, &phba->port_list, listentry) { 6555 if (vport->vpi == i) { 6556 spin_unlock_irqrestore(&phba->port_list_lock, flags); 6557 return vport; 6558 } 6559 } 6560 spin_unlock_irqrestore(&phba->port_list_lock, flags); 6561 return NULL; 6562 } 6563 6564 struct lpfc_nodelist * 6565 lpfc_nlp_init(struct lpfc_vport *vport, uint32_t did) 6566 { 6567 struct lpfc_nodelist *ndlp; 6568 int rpi = LPFC_RPI_ALLOC_ERROR; 6569 6570 if (vport->phba->sli_rev == LPFC_SLI_REV4) { 6571 rpi = lpfc_sli4_alloc_rpi(vport->phba); 6572 if (rpi == LPFC_RPI_ALLOC_ERROR) 6573 return NULL; 6574 } 6575 6576 ndlp = mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL); 6577 if (!ndlp) { 6578 if (vport->phba->sli_rev == LPFC_SLI_REV4) 6579 lpfc_sli4_free_rpi(vport->phba, rpi); 6580 return NULL; 6581 } 6582 6583 memset(ndlp, 0, sizeof (struct lpfc_nodelist)); 6584 6585 spin_lock_init(&ndlp->lock); 6586 6587 lpfc_initialize_node(vport, ndlp, did); 6588 INIT_LIST_HEAD(&ndlp->nlp_listp); 6589 if (vport->phba->sli_rev == LPFC_SLI_REV4) { 6590 ndlp->nlp_rpi = rpi; 6591 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_DISCOVERY, 6592 "0007 Init New ndlp x%px, rpi:x%x DID:%x " 6593 "flg:x%x refcnt:%d\n", 6594 ndlp, ndlp->nlp_rpi, ndlp->nlp_DID, 6595 ndlp->nlp_flag, kref_read(&ndlp->kref)); 6596 6597 ndlp->active_rrqs_xri_bitmap = 6598 mempool_alloc(vport->phba->active_rrq_pool, 6599 GFP_KERNEL); 6600 if (ndlp->active_rrqs_xri_bitmap) 6601 memset(ndlp->active_rrqs_xri_bitmap, 0, 6602 ndlp->phba->cfg_rrq_xri_bitmap_sz); 6603 } 6604 6605 6606 6607 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, 6608 "node init: did:x%x", 6609 ndlp->nlp_DID, 0, 0); 6610 6611 return ndlp; 6612 } 6613 6614 /* This routine releases all resources associated with a specifc NPort's ndlp 6615 * and mempool_free's the nodelist. 6616 */ 6617 static void 6618 lpfc_nlp_release(struct kref *kref) 6619 { 6620 struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist, 6621 kref); 6622 struct lpfc_vport *vport = ndlp->vport; 6623 6624 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 6625 "node release: did:x%x flg:x%x type:x%x", 6626 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 6627 6628 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 6629 "0279 %s: ndlp: x%px did %x refcnt:%d rpi:%x\n", 6630 __func__, ndlp, ndlp->nlp_DID, 6631 kref_read(&ndlp->kref), ndlp->nlp_rpi); 6632 6633 /* remove ndlp from action. */ 6634 lpfc_cancel_retry_delay_tmo(vport, ndlp); 6635 lpfc_cleanup_node(vport, ndlp); 6636 6637 /* Not all ELS transactions have registered the RPI with the port. 6638 * In these cases the rpi usage is temporary and the node is 6639 * released when the WQE is completed. Catch this case to free the 6640 * RPI to the pool. Because this node is in the release path, a lock 6641 * is unnecessary. All references are gone and the node has been 6642 * dequeued. 6643 */ 6644 if (ndlp->nlp_flag & NLP_RELEASE_RPI) { 6645 if (ndlp->nlp_rpi != LPFC_RPI_ALLOC_ERROR && 6646 !(ndlp->nlp_flag & (NLP_RPI_REGISTERED | NLP_UNREG_INP))) { 6647 lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi); 6648 ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR; 6649 } 6650 } 6651 6652 /* The node is not freed back to memory, it is released to a pool so 6653 * the node fields need to be cleaned up. 6654 */ 6655 ndlp->vport = NULL; 6656 ndlp->nlp_state = NLP_STE_FREED_NODE; 6657 ndlp->nlp_flag = 0; 6658 ndlp->fc4_xpt_flags = 0; 6659 6660 /* free ndlp memory for final ndlp release */ 6661 kfree(ndlp->lat_data); 6662 if (ndlp->phba->sli_rev == LPFC_SLI_REV4) 6663 mempool_free(ndlp->active_rrqs_xri_bitmap, 6664 ndlp->phba->active_rrq_pool); 6665 mempool_free(ndlp, ndlp->phba->nlp_mem_pool); 6666 } 6667 6668 /* This routine bumps the reference count for a ndlp structure to ensure 6669 * that one discovery thread won't free a ndlp while another discovery thread 6670 * is using it. 6671 */ 6672 struct lpfc_nodelist * 6673 lpfc_nlp_get(struct lpfc_nodelist *ndlp) 6674 { 6675 unsigned long flags; 6676 6677 if (ndlp) { 6678 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 6679 "node get: did:x%x flg:x%x refcnt:x%x", 6680 ndlp->nlp_DID, ndlp->nlp_flag, 6681 kref_read(&ndlp->kref)); 6682 6683 /* The check of ndlp usage to prevent incrementing the 6684 * ndlp reference count that is in the process of being 6685 * released. 6686 */ 6687 spin_lock_irqsave(&ndlp->lock, flags); 6688 if (!kref_get_unless_zero(&ndlp->kref)) { 6689 spin_unlock_irqrestore(&ndlp->lock, flags); 6690 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE, 6691 "0276 %s: ndlp:x%px refcnt:%d\n", 6692 __func__, (void *)ndlp, kref_read(&ndlp->kref)); 6693 return NULL; 6694 } 6695 spin_unlock_irqrestore(&ndlp->lock, flags); 6696 } else { 6697 WARN_ONCE(!ndlp, "**** %s, get ref on NULL ndlp!", __func__); 6698 } 6699 6700 return ndlp; 6701 } 6702 6703 /* This routine decrements the reference count for a ndlp structure. If the 6704 * count goes to 0, this indicates the associated nodelist should be freed. 6705 */ 6706 int 6707 lpfc_nlp_put(struct lpfc_nodelist *ndlp) 6708 { 6709 if (ndlp) { 6710 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 6711 "node put: did:x%x flg:x%x refcnt:x%x", 6712 ndlp->nlp_DID, ndlp->nlp_flag, 6713 kref_read(&ndlp->kref)); 6714 } else { 6715 WARN_ONCE(!ndlp, "**** %s, put ref on NULL ndlp!", __func__); 6716 } 6717 6718 return ndlp ? kref_put(&ndlp->kref, lpfc_nlp_release) : 0; 6719 } 6720 6721 /* This routine free's the specified nodelist if it is not in use 6722 * by any other discovery thread. This routine returns 1 if the 6723 * ndlp has been freed. A return value of 0 indicates the ndlp is 6724 * not yet been released. 6725 */ 6726 int 6727 lpfc_nlp_not_used(struct lpfc_nodelist *ndlp) 6728 { 6729 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 6730 "node not used: did:x%x flg:x%x refcnt:x%x", 6731 ndlp->nlp_DID, ndlp->nlp_flag, 6732 kref_read(&ndlp->kref)); 6733 6734 if (kref_read(&ndlp->kref) == 1) 6735 if (lpfc_nlp_put(ndlp)) 6736 return 1; 6737 return 0; 6738 } 6739 6740 /** 6741 * lpfc_fcf_inuse - Check if FCF can be unregistered. 6742 * @phba: Pointer to hba context object. 6743 * 6744 * This function iterate through all FC nodes associated 6745 * will all vports to check if there is any node with 6746 * fc_rports associated with it. If there is an fc_rport 6747 * associated with the node, then the node is either in 6748 * discovered state or its devloss_timer is pending. 6749 */ 6750 static int 6751 lpfc_fcf_inuse(struct lpfc_hba *phba) 6752 { 6753 struct lpfc_vport **vports; 6754 int i, ret = 0; 6755 struct lpfc_nodelist *ndlp; 6756 struct Scsi_Host *shost; 6757 6758 vports = lpfc_create_vport_work_array(phba); 6759 6760 /* If driver cannot allocate memory, indicate fcf is in use */ 6761 if (!vports) 6762 return 1; 6763 6764 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 6765 shost = lpfc_shost_from_vport(vports[i]); 6766 spin_lock_irq(shost->host_lock); 6767 /* 6768 * IF the CVL_RCVD bit is not set then we have sent the 6769 * flogi. 6770 * If dev_loss fires while we are waiting we do not want to 6771 * unreg the fcf. 6772 */ 6773 if (!(vports[i]->fc_flag & FC_VPORT_CVL_RCVD)) { 6774 spin_unlock_irq(shost->host_lock); 6775 ret = 1; 6776 goto out; 6777 } 6778 list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) { 6779 if (ndlp->rport && 6780 (ndlp->rport->roles & FC_RPORT_ROLE_FCP_TARGET)) { 6781 ret = 1; 6782 spin_unlock_irq(shost->host_lock); 6783 goto out; 6784 } else if (ndlp->nlp_flag & NLP_RPI_REGISTERED) { 6785 ret = 1; 6786 lpfc_printf_log(phba, KERN_INFO, 6787 LOG_NODE | LOG_DISCOVERY, 6788 "2624 RPI %x DID %x flag %x " 6789 "still logged in\n", 6790 ndlp->nlp_rpi, ndlp->nlp_DID, 6791 ndlp->nlp_flag); 6792 } 6793 } 6794 spin_unlock_irq(shost->host_lock); 6795 } 6796 out: 6797 lpfc_destroy_vport_work_array(phba, vports); 6798 return ret; 6799 } 6800 6801 /** 6802 * lpfc_unregister_vfi_cmpl - Completion handler for unreg vfi. 6803 * @phba: Pointer to hba context object. 6804 * @mboxq: Pointer to mailbox object. 6805 * 6806 * This function frees memory associated with the mailbox command. 6807 */ 6808 void 6809 lpfc_unregister_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 6810 { 6811 struct lpfc_vport *vport = mboxq->vport; 6812 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 6813 6814 if (mboxq->u.mb.mbxStatus) { 6815 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6816 "2555 UNREG_VFI mbxStatus error x%x " 6817 "HBA state x%x\n", 6818 mboxq->u.mb.mbxStatus, vport->port_state); 6819 } 6820 spin_lock_irq(shost->host_lock); 6821 phba->pport->fc_flag &= ~FC_VFI_REGISTERED; 6822 spin_unlock_irq(shost->host_lock); 6823 mempool_free(mboxq, phba->mbox_mem_pool); 6824 return; 6825 } 6826 6827 /** 6828 * lpfc_unregister_fcfi_cmpl - Completion handler for unreg fcfi. 6829 * @phba: Pointer to hba context object. 6830 * @mboxq: Pointer to mailbox object. 6831 * 6832 * This function frees memory associated with the mailbox command. 6833 */ 6834 static void 6835 lpfc_unregister_fcfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 6836 { 6837 struct lpfc_vport *vport = mboxq->vport; 6838 6839 if (mboxq->u.mb.mbxStatus) { 6840 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6841 "2550 UNREG_FCFI mbxStatus error x%x " 6842 "HBA state x%x\n", 6843 mboxq->u.mb.mbxStatus, vport->port_state); 6844 } 6845 mempool_free(mboxq, phba->mbox_mem_pool); 6846 return; 6847 } 6848 6849 /** 6850 * lpfc_unregister_fcf_prep - Unregister fcf record preparation 6851 * @phba: Pointer to hba context object. 6852 * 6853 * This function prepare the HBA for unregistering the currently registered 6854 * FCF from the HBA. It performs unregistering, in order, RPIs, VPIs, and 6855 * VFIs. 6856 */ 6857 int 6858 lpfc_unregister_fcf_prep(struct lpfc_hba *phba) 6859 { 6860 struct lpfc_vport **vports; 6861 struct lpfc_nodelist *ndlp; 6862 struct Scsi_Host *shost; 6863 int i = 0, rc; 6864 6865 /* Unregister RPIs */ 6866 if (lpfc_fcf_inuse(phba)) 6867 lpfc_unreg_hba_rpis(phba); 6868 6869 /* At this point, all discovery is aborted */ 6870 phba->pport->port_state = LPFC_VPORT_UNKNOWN; 6871 6872 /* Unregister VPIs */ 6873 vports = lpfc_create_vport_work_array(phba); 6874 if (vports && (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) 6875 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 6876 /* Stop FLOGI/FDISC retries */ 6877 ndlp = lpfc_findnode_did(vports[i], Fabric_DID); 6878 if (ndlp) 6879 lpfc_cancel_retry_delay_tmo(vports[i], ndlp); 6880 lpfc_cleanup_pending_mbox(vports[i]); 6881 if (phba->sli_rev == LPFC_SLI_REV4) 6882 lpfc_sli4_unreg_all_rpis(vports[i]); 6883 lpfc_mbx_unreg_vpi(vports[i]); 6884 shost = lpfc_shost_from_vport(vports[i]); 6885 spin_lock_irq(shost->host_lock); 6886 vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI; 6887 vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED; 6888 spin_unlock_irq(shost->host_lock); 6889 } 6890 lpfc_destroy_vport_work_array(phba, vports); 6891 if (i == 0 && (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))) { 6892 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID); 6893 if (ndlp) 6894 lpfc_cancel_retry_delay_tmo(phba->pport, ndlp); 6895 lpfc_cleanup_pending_mbox(phba->pport); 6896 if (phba->sli_rev == LPFC_SLI_REV4) 6897 lpfc_sli4_unreg_all_rpis(phba->pport); 6898 lpfc_mbx_unreg_vpi(phba->pport); 6899 shost = lpfc_shost_from_vport(phba->pport); 6900 spin_lock_irq(shost->host_lock); 6901 phba->pport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI; 6902 phba->pport->vpi_state &= ~LPFC_VPI_REGISTERED; 6903 spin_unlock_irq(shost->host_lock); 6904 } 6905 6906 /* Cleanup any outstanding ELS commands */ 6907 lpfc_els_flush_all_cmd(phba); 6908 6909 /* Unregister the physical port VFI */ 6910 rc = lpfc_issue_unreg_vfi(phba->pport); 6911 return rc; 6912 } 6913 6914 /** 6915 * lpfc_sli4_unregister_fcf - Unregister currently registered FCF record 6916 * @phba: Pointer to hba context object. 6917 * 6918 * This function issues synchronous unregister FCF mailbox command to HBA to 6919 * unregister the currently registered FCF record. The driver does not reset 6920 * the driver FCF usage state flags. 6921 * 6922 * Return 0 if successfully issued, none-zero otherwise. 6923 */ 6924 int 6925 lpfc_sli4_unregister_fcf(struct lpfc_hba *phba) 6926 { 6927 LPFC_MBOXQ_t *mbox; 6928 int rc; 6929 6930 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 6931 if (!mbox) { 6932 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6933 "2551 UNREG_FCFI mbox allocation failed" 6934 "HBA state x%x\n", phba->pport->port_state); 6935 return -ENOMEM; 6936 } 6937 lpfc_unreg_fcfi(mbox, phba->fcf.fcfi); 6938 mbox->vport = phba->pport; 6939 mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl; 6940 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 6941 6942 if (rc == MBX_NOT_FINISHED) { 6943 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6944 "2552 Unregister FCFI command failed rc x%x " 6945 "HBA state x%x\n", 6946 rc, phba->pport->port_state); 6947 return -EINVAL; 6948 } 6949 return 0; 6950 } 6951 6952 /** 6953 * lpfc_unregister_fcf_rescan - Unregister currently registered fcf and rescan 6954 * @phba: Pointer to hba context object. 6955 * 6956 * This function unregisters the currently reigstered FCF. This function 6957 * also tries to find another FCF for discovery by rescan the HBA FCF table. 6958 */ 6959 void 6960 lpfc_unregister_fcf_rescan(struct lpfc_hba *phba) 6961 { 6962 int rc; 6963 6964 /* Preparation for unregistering fcf */ 6965 rc = lpfc_unregister_fcf_prep(phba); 6966 if (rc) { 6967 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 6968 "2748 Failed to prepare for unregistering " 6969 "HBA's FCF record: rc=%d\n", rc); 6970 return; 6971 } 6972 6973 /* Now, unregister FCF record and reset HBA FCF state */ 6974 rc = lpfc_sli4_unregister_fcf(phba); 6975 if (rc) 6976 return; 6977 /* Reset HBA FCF states after successful unregister FCF */ 6978 phba->fcf.fcf_flag = 0; 6979 phba->fcf.current_rec.flag = 0; 6980 6981 /* 6982 * If driver is not unloading, check if there is any other 6983 * FCF record that can be used for discovery. 6984 */ 6985 if ((phba->pport->load_flag & FC_UNLOADING) || 6986 (phba->link_state < LPFC_LINK_UP)) 6987 return; 6988 6989 /* This is considered as the initial FCF discovery scan */ 6990 spin_lock_irq(&phba->hbalock); 6991 phba->fcf.fcf_flag |= FCF_INIT_DISC; 6992 spin_unlock_irq(&phba->hbalock); 6993 6994 /* Reset FCF roundrobin bmask for new discovery */ 6995 lpfc_sli4_clear_fcf_rr_bmask(phba); 6996 6997 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST); 6998 6999 if (rc) { 7000 spin_lock_irq(&phba->hbalock); 7001 phba->fcf.fcf_flag &= ~FCF_INIT_DISC; 7002 spin_unlock_irq(&phba->hbalock); 7003 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 7004 "2553 lpfc_unregister_unused_fcf failed " 7005 "to read FCF record HBA state x%x\n", 7006 phba->pport->port_state); 7007 } 7008 } 7009 7010 /** 7011 * lpfc_unregister_fcf - Unregister the currently registered fcf record 7012 * @phba: Pointer to hba context object. 7013 * 7014 * This function just unregisters the currently reigstered FCF. It does not 7015 * try to find another FCF for discovery. 7016 */ 7017 void 7018 lpfc_unregister_fcf(struct lpfc_hba *phba) 7019 { 7020 int rc; 7021 7022 /* Preparation for unregistering fcf */ 7023 rc = lpfc_unregister_fcf_prep(phba); 7024 if (rc) { 7025 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 7026 "2749 Failed to prepare for unregistering " 7027 "HBA's FCF record: rc=%d\n", rc); 7028 return; 7029 } 7030 7031 /* Now, unregister FCF record and reset HBA FCF state */ 7032 rc = lpfc_sli4_unregister_fcf(phba); 7033 if (rc) 7034 return; 7035 /* Set proper HBA FCF states after successful unregister FCF */ 7036 spin_lock_irq(&phba->hbalock); 7037 phba->fcf.fcf_flag &= ~FCF_REGISTERED; 7038 spin_unlock_irq(&phba->hbalock); 7039 } 7040 7041 /** 7042 * lpfc_unregister_unused_fcf - Unregister FCF if all devices are disconnected. 7043 * @phba: Pointer to hba context object. 7044 * 7045 * This function check if there are any connected remote port for the FCF and 7046 * if all the devices are disconnected, this function unregister FCFI. 7047 * This function also tries to use another FCF for discovery. 7048 */ 7049 void 7050 lpfc_unregister_unused_fcf(struct lpfc_hba *phba) 7051 { 7052 /* 7053 * If HBA is not running in FIP mode, if HBA does not support 7054 * FCoE, if FCF discovery is ongoing, or if FCF has not been 7055 * registered, do nothing. 7056 */ 7057 spin_lock_irq(&phba->hbalock); 7058 if (!(phba->hba_flag & HBA_FCOE_MODE) || 7059 !(phba->fcf.fcf_flag & FCF_REGISTERED) || 7060 !(phba->hba_flag & HBA_FIP_SUPPORT) || 7061 (phba->fcf.fcf_flag & FCF_DISCOVERY) || 7062 (phba->pport->port_state == LPFC_FLOGI)) { 7063 spin_unlock_irq(&phba->hbalock); 7064 return; 7065 } 7066 spin_unlock_irq(&phba->hbalock); 7067 7068 if (lpfc_fcf_inuse(phba)) 7069 return; 7070 7071 lpfc_unregister_fcf_rescan(phba); 7072 } 7073 7074 /** 7075 * lpfc_read_fcf_conn_tbl - Create driver FCF connection table. 7076 * @phba: Pointer to hba context object. 7077 * @buff: Buffer containing the FCF connection table as in the config 7078 * region. 7079 * This function create driver data structure for the FCF connection 7080 * record table read from config region 23. 7081 */ 7082 static void 7083 lpfc_read_fcf_conn_tbl(struct lpfc_hba *phba, 7084 uint8_t *buff) 7085 { 7086 struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry; 7087 struct lpfc_fcf_conn_hdr *conn_hdr; 7088 struct lpfc_fcf_conn_rec *conn_rec; 7089 uint32_t record_count; 7090 int i; 7091 7092 /* Free the current connect table */ 7093 list_for_each_entry_safe(conn_entry, next_conn_entry, 7094 &phba->fcf_conn_rec_list, list) { 7095 list_del_init(&conn_entry->list); 7096 kfree(conn_entry); 7097 } 7098 7099 conn_hdr = (struct lpfc_fcf_conn_hdr *) buff; 7100 record_count = conn_hdr->length * sizeof(uint32_t)/ 7101 sizeof(struct lpfc_fcf_conn_rec); 7102 7103 conn_rec = (struct lpfc_fcf_conn_rec *) 7104 (buff + sizeof(struct lpfc_fcf_conn_hdr)); 7105 7106 for (i = 0; i < record_count; i++) { 7107 if (!(conn_rec[i].flags & FCFCNCT_VALID)) 7108 continue; 7109 conn_entry = kzalloc(sizeof(struct lpfc_fcf_conn_entry), 7110 GFP_KERNEL); 7111 if (!conn_entry) { 7112 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 7113 "2566 Failed to allocate connection" 7114 " table entry\n"); 7115 return; 7116 } 7117 7118 memcpy(&conn_entry->conn_rec, &conn_rec[i], 7119 sizeof(struct lpfc_fcf_conn_rec)); 7120 list_add_tail(&conn_entry->list, 7121 &phba->fcf_conn_rec_list); 7122 } 7123 7124 if (!list_empty(&phba->fcf_conn_rec_list)) { 7125 i = 0; 7126 list_for_each_entry(conn_entry, &phba->fcf_conn_rec_list, 7127 list) { 7128 conn_rec = &conn_entry->conn_rec; 7129 lpfc_printf_log(phba, KERN_INFO, LOG_INIT, 7130 "3345 FCF connection list rec[%02d]: " 7131 "flags:x%04x, vtag:x%04x, " 7132 "fabric_name:x%02x:%02x:%02x:%02x:" 7133 "%02x:%02x:%02x:%02x, " 7134 "switch_name:x%02x:%02x:%02x:%02x:" 7135 "%02x:%02x:%02x:%02x\n", i++, 7136 conn_rec->flags, conn_rec->vlan_tag, 7137 conn_rec->fabric_name[0], 7138 conn_rec->fabric_name[1], 7139 conn_rec->fabric_name[2], 7140 conn_rec->fabric_name[3], 7141 conn_rec->fabric_name[4], 7142 conn_rec->fabric_name[5], 7143 conn_rec->fabric_name[6], 7144 conn_rec->fabric_name[7], 7145 conn_rec->switch_name[0], 7146 conn_rec->switch_name[1], 7147 conn_rec->switch_name[2], 7148 conn_rec->switch_name[3], 7149 conn_rec->switch_name[4], 7150 conn_rec->switch_name[5], 7151 conn_rec->switch_name[6], 7152 conn_rec->switch_name[7]); 7153 } 7154 } 7155 } 7156 7157 /** 7158 * lpfc_read_fcoe_param - Read FCoe parameters from conf region.. 7159 * @phba: Pointer to hba context object. 7160 * @buff: Buffer containing the FCoE parameter data structure. 7161 * 7162 * This function update driver data structure with config 7163 * parameters read from config region 23. 7164 */ 7165 static void 7166 lpfc_read_fcoe_param(struct lpfc_hba *phba, 7167 uint8_t *buff) 7168 { 7169 struct lpfc_fip_param_hdr *fcoe_param_hdr; 7170 struct lpfc_fcoe_params *fcoe_param; 7171 7172 fcoe_param_hdr = (struct lpfc_fip_param_hdr *) 7173 buff; 7174 fcoe_param = (struct lpfc_fcoe_params *) 7175 (buff + sizeof(struct lpfc_fip_param_hdr)); 7176 7177 if ((fcoe_param_hdr->parm_version != FIPP_VERSION) || 7178 (fcoe_param_hdr->length != FCOE_PARAM_LENGTH)) 7179 return; 7180 7181 if (fcoe_param_hdr->parm_flags & FIPP_VLAN_VALID) { 7182 phba->valid_vlan = 1; 7183 phba->vlan_id = le16_to_cpu(fcoe_param->vlan_tag) & 7184 0xFFF; 7185 } 7186 7187 phba->fc_map[0] = fcoe_param->fc_map[0]; 7188 phba->fc_map[1] = fcoe_param->fc_map[1]; 7189 phba->fc_map[2] = fcoe_param->fc_map[2]; 7190 return; 7191 } 7192 7193 /** 7194 * lpfc_get_rec_conf23 - Get a record type in config region data. 7195 * @buff: Buffer containing config region 23 data. 7196 * @size: Size of the data buffer. 7197 * @rec_type: Record type to be searched. 7198 * 7199 * This function searches config region data to find the beginning 7200 * of the record specified by record_type. If record found, this 7201 * function return pointer to the record else return NULL. 7202 */ 7203 static uint8_t * 7204 lpfc_get_rec_conf23(uint8_t *buff, uint32_t size, uint8_t rec_type) 7205 { 7206 uint32_t offset = 0, rec_length; 7207 7208 if ((buff[0] == LPFC_REGION23_LAST_REC) || 7209 (size < sizeof(uint32_t))) 7210 return NULL; 7211 7212 rec_length = buff[offset + 1]; 7213 7214 /* 7215 * One TLV record has one word header and number of data words 7216 * specified in the rec_length field of the record header. 7217 */ 7218 while ((offset + rec_length * sizeof(uint32_t) + sizeof(uint32_t)) 7219 <= size) { 7220 if (buff[offset] == rec_type) 7221 return &buff[offset]; 7222 7223 if (buff[offset] == LPFC_REGION23_LAST_REC) 7224 return NULL; 7225 7226 offset += rec_length * sizeof(uint32_t) + sizeof(uint32_t); 7227 rec_length = buff[offset + 1]; 7228 } 7229 return NULL; 7230 } 7231 7232 /** 7233 * lpfc_parse_fcoe_conf - Parse FCoE config data read from config region 23. 7234 * @phba: Pointer to lpfc_hba data structure. 7235 * @buff: Buffer containing config region 23 data. 7236 * @size: Size of the data buffer. 7237 * 7238 * This function parses the FCoE config parameters in config region 23 and 7239 * populate driver data structure with the parameters. 7240 */ 7241 void 7242 lpfc_parse_fcoe_conf(struct lpfc_hba *phba, 7243 uint8_t *buff, 7244 uint32_t size) 7245 { 7246 uint32_t offset = 0; 7247 uint8_t *rec_ptr; 7248 7249 /* 7250 * If data size is less than 2 words signature and version cannot be 7251 * verified. 7252 */ 7253 if (size < 2*sizeof(uint32_t)) 7254 return; 7255 7256 /* Check the region signature first */ 7257 if (memcmp(buff, LPFC_REGION23_SIGNATURE, 4)) { 7258 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 7259 "2567 Config region 23 has bad signature\n"); 7260 return; 7261 } 7262 7263 offset += 4; 7264 7265 /* Check the data structure version */ 7266 if (buff[offset] != LPFC_REGION23_VERSION) { 7267 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 7268 "2568 Config region 23 has bad version\n"); 7269 return; 7270 } 7271 offset += 4; 7272 7273 /* Read FCoE param record */ 7274 rec_ptr = lpfc_get_rec_conf23(&buff[offset], 7275 size - offset, FCOE_PARAM_TYPE); 7276 if (rec_ptr) 7277 lpfc_read_fcoe_param(phba, rec_ptr); 7278 7279 /* Read FCF connection table */ 7280 rec_ptr = lpfc_get_rec_conf23(&buff[offset], 7281 size - offset, FCOE_CONN_TBL_TYPE); 7282 if (rec_ptr) 7283 lpfc_read_fcf_conn_tbl(phba, rec_ptr); 7284 7285 } 7286